Bowel Wall Thickening Research Articles

Malignancy predictors and treatment strategies for adult intestinal intussusception.

Intussusception in adult patients is a rare medical finding, which is accompanied by an underlying tumor in some cases. However, no accepted method has been established to identify patients at risk for tumor-related intussusception. This study aimed to identify imaging features as predictors for tumor-related intussusception.CT images of patients with confirmed intussusception were retrospectively acquired between 01/2008 and 12/2022. Available follow-up images and medical health records were evaluated to identify various imaging features, the cause of intussusception, and treatment strategies. Imaging interpretation was conducted by two blinded radiologists. A third radiologist was consulted in cases of disagreement.A total of 71 consecutive patients were included in this study (42 males, 29 females) with a median age of 56 years (interquartile range: 40.5-73.8 years). Enteroenteric intussusceptions in the small bowel were the most common type observed in adult patients. In contrast, colocolic intussusception was more frequently associated with malignancy, and this association was statistically significant (p < 0.05). Among the malignant tumors, adenocarcinoma was the most common, followed by metastases and lymphoma. Additionally, bowel obstruction and wall thickening were significantly correlated with malignancy (p < 0.05). The high negative predictive values (NPVs) and high specificities for ileus (NPV 88.5%, specificity 82.1%), bowel wall thickening (NPV 90.9%, specificity 71.4%), and acute abdomen (NPV 84.6%, specificity 78.8%) suggest that the absence of these features strongly predicts a low probability of malignancy in cases of adult intussusception.Active surveillance with follow-up exams is suitable for asymptomatic and transient intussusception when imaging features suggest a low likelihood of a neoplasm. Additionally, malignancy predictors such as ileus and thickening of the bowel wall in the affected segment could guide tailored treatment. Surgical interventions are essential for symptomatic cases, with adenocarcinoma being the most common malignancy found in colocolic intussusceptions.Intussusception in adults is rare and is often associated with underlying tumors, particularly in colocolic intussusceptions. Key imaging predictors for malignancy include bowel obstruction, wall thickening in the affected segment, and the presence of acute abdomen, with high NPVs and specificities indicating low malignancy risk when these features are absent. Active surveillance is recommended for asymptomatic cases with low neoplasm probability, while surgical intervention is the method of choice for symptomatic patients. · Reschke P, Le Hong QA, Gruenewald LD et al. Malignancy predictors and treatment strategies for adult intestinal intussusception. Fortschr Röntgenstr 2024; DOI 10.1055/a-2434-7932.

Clinical features, imaging findings, and outcomes of acute abdominal pain in systemic lupus erythematosus: comparing mesenteric vasculitis, non-mesenteric vasculitis, and surgical conditions.

To determine the spectrum, clinical features and outcomes in systemic lupus erythematosus (SLE) patients with acute abdominal pain (AAP). Medical records of SLE patients in a lupus cohort from January 1987 to June 2023 were reviewed. Patients with AAP requiring hospitalization were identified and categorized into 3 groups: lupus mesenteric vasculitis (LMV), non-LMV, and surgical AAP. Each AAP episode represented one patient. Of 1,538 patients in the cohort, 62 (4.03%) had 93 episodes of AAP. After exclusion, 31 patients had 39 LMV episodes, and 30 had 40 non-LMV episodes (19 due to surgical AAP). Seventy-six of the 79 AAP episodes (96.20%) were in females, with a mean ± SD age and median (IQR) disease duration of 36.76 ± 13.60 years and 6 (2, 9) years, respectively. Patients in the LMV group had more fever, nausea and vomiting, and diarrhea than those in the non-LMV group. They also had more small bowel involvement, bowel wall thickening, target water enhancement signs, mesenteric vessels engorgement and mesenteric fat cloudiness, and higher SLE disease activity. These differences were more pronounced when compared to the surgical AAP group. Treatment with corticosteroids and immunosuppressive drugs gave favorable outcomes in the LMV group. Two of 40 (5.00%) non-LMV AAP patients died, of which 1 (5.26%) was in the surgical AAP group. LMV was common among SLE patients admitted for AAP. LMV usually presented with fever, gastrointestinal dysmotility symptoms, diffused abdominal pain, together with evidence of active disease. Localized abdominal pain with peritoneal signs favored surgical AAP. Key Points • Lupus mesenteric vasculitis is common among SLE patients presenting with acute abdominal pain. Its presence often associates with gastrointestinal symptoms together with other clinical manifestations of SLE • The signs in abdominal computed tomography findings are not specific and could be observed in other causes of abdominal pain in SLE. Interpretation of these signs should be cautionary and accompanied by history taking and physical abdominal findings • Treatment of lupus mesenteric vasculitis with corticosteroids alone, or in combination with immunosuppressive drugs, usually results in good outcomes.

International expert guidance for defining and monitoring small bowel strictures in Crohn's disease on intestinal ultrasound: a consensus statement

Diagnostic imaging using CT enterography, magnetic resonance enterography, and intestinal ultrasound are important tools in evaluating stricturing Crohn's disease. Definitions of strictures have been developed for CT enterography and magnetic resonance enterography. However, expert recommendations for definitions and treatment response of strictures on intestinal ultrasound are not available. The aim of this study was to standardise definitions, diagnosis, and treatment response criteria in small bowel stricturing Crohn's disease on intestinal ultrasound. Using modified RAND-University of California Los Angeles Appropriateness Method, a diverse expert panel of 13 gastroenterologists, seven radiologists, and two patient representatives was assembled. A total of 466 statements on definitions and response to therapy of stricturing Crohn's disease on intestinal ultrasound were generated from a systematic review and from expert opinion, with subsequent rating for appropriateness. Two rounds of voting with an interposed survey result discussion were performed. Statements were classified as inappropriate, uncertain, or appropriate based on the median panel rating and degree of disagreement. Appropriateness was rated using a nine-point Likert scale (1 being inappropriate, 9 being highly appropriate). A naive or anastomotic small bowel Crohn's disease stricture on intestinal ultrasound is defined by the combination of bowel wall thickening, luminal narrowing, and pre-stenotic dilation. Bowel wall thickness is defined as being more than 3 mm. Luminal narrowing is defined as either a luminal diameter reduction of more than 50% in the narrowest area and relative to a normal adjacent bowel loop, or a luminal diameter of less than 1 cm. Pre-stenotic dilation is defined as more than 2·5 cm or an increase in bowel diameter relative to a normal adjacent bowel loop. Definitions for grading hyperaemia, inflammatory fat, wall stratification, intestinal ultrasound machine technical parameters, and image acquisition were also devised. Treatment response of strictures was defined as reduction in stricture length, bowel wall thickening, luminal narrowing, pre-stenotic dilation, and motility abnormalities. To our knowledge, this is the first intestinal ultrasound appropriateness rating exercise conducted for defining, diagnosing, and measuring response to therapy in small bowel stricturing Crohn's disease and informs future clinical use and intestinal ultrasound index development for clinical trials. Leona M and Harry B Helmsley Charitable Trust.

Case Series Analysis of Diagnosis and Treatment of Gastrointestinal Metastasis in Lung Cancer Patients.

This study was designed to investigate the clinical, pathological, endoscopic, and imaging characteristics of gastrointestinal metastasis in patients with lung cancer. The clinical data of 20 patients with primary lung cancer with gastrointestinal metastasis. This study included sixteen men and four women, ranging in age from 31 to 75 years. The time interval from the diagnosis of lung cancer to the detection of gastrointestinal metastasis ranged from 13 to 142 months. The most common sites of metastasis were the small intestine (eight cases), colon (four cases), and upper gastrointestinal tract (eight cases). The major symptoms included obstruction, perforation, abdominal pain, abdominal distension, anorexia, and anemia. The predominant pathological type was poorly differentiated adenocarcinoma (seventeen cases). A single ulcer was mostly seen on endoscopy, and some cases showed a slight depression of the intestinal wall. The CT and PET-CT scan revealed bowel wall thickening, intraluminal polypoid masses, and intestinal perforation. Gastrointestinal metastasis of lung cancer is mainly observed in the small intestine, colon, and stomach, and is often detected when severe complications such as gastrointestinal obstruction and perforation occurred. Regular evaluation of gastrointestinal conditions during lung cancer diagnosis and treatment is recommended to improve the diagnostic accuracy and prevent misdiagnosis.

Enteric fever in a young man with bowel wall thickening and hepatosplenomegaly

Typhoid fever (enteric fever), caused by Salmonella enterica subsp. enterica serovar Typhi (S. Typhi), is a public health problem especially in South Asia and sub-Saharan African countries, while incidence remains low in most other parts of the world, where the disease is primary related to recent travel to endemic countries or contact with chronic carriers. The diagnosis of typhoid fever is challenging in endemic countries, often also low- and middle- income countries (LMIC), due to the poor sensitivity/specificity of available serologic tests and lack of adequate infrastructure for blood cultures. We report the case of an 18-year-old male patient with a 21-day history of right-sided abdominal pain, malaise, headache, intermittent fever and watery diarrhea. Contrast-enhanced abdominal computed tomography (CT) exhibits thickening of the terminal ileum, cecum and ascending colon with mesenteric lymphadenopathy. Laboratory findings indicate elevated transaminases, positive blood culture to S. Typhi and a positive Widal test to S. Paratyphi A, B and S. Typhi H (flagellar) antigens. A diagnosis of complicated typhoid fever was made. Following a 13-day regimen of ceftriaxone, all symptoms resolved. Few reports have been made about CT manifestations in patients with typhoid fever. While CT can aid in diagnosis, it is particularly important for identifying complications of typhoid fever such as perforation, bleeding and abscess formation.

MR enterography radiologic ulcers in newly diagnosed ileal Crohn disease in children: frequency, inter-radiologist agreement, and clinical correlation

BackgroundRadiologic ulcers are increasingly recognized as an imaging finding of bowel wall active inflammation in Crohn disease (CD).ObjectiveTo determine the frequency of ulcers at MR enterography (MRE) in children with newly diagnosed ileal CD, assess agreement between radiologists, and evaluate if their presence correlates with other imaging and clinical features of intestinal active inflammation.Materials and methodsThis retrospective study included 108 consecutive pediatric patients (ages 6–18 years) with newly diagnosed ileal CD that underwent clinical MRE prior to treatment initiation between January 2021 and December 2022. MRE examinations were independently reviewed by three pediatric radiologists who indicated the presence vs. absence of ulcers, ulcer severity (categorical depth), and ulcer extent (categorical number of ulcers). Maximum bowel wall thickness and length of disease were measured and averaged across readers. Patient demographics and clinical inflammatory markers were documented from electronic health records. Inter-radiologist agreement was assessed using Fleiss’ kappa (k) statistics. Student’s t-test was used to compare continuous variables.ResultsMean patient age was 13.9 years (67 [62%] boys). Radiologic ulcers were recorded in 64/108 (59.3%) cases by reader 1, 70/108 (64.8%) cases by reader 2, and 49/108 (45.4%) cases by reader 3 (k = 0.36). Based on majority consensus, radiologic ulcers were present in 60/108 (55.6%) participants. Inter-radiologist agreement for ulcer severity was k = 0.23, while ulcer extent was k = 0.66. There were significant differences in C-reactive protein, erythrocyte sedimentation rate, fecal calprotectin, albumin, maximum bowel wall thickness, and length of disease between patients without and with radiologic ulcers (P < 0.05). The sensitivity and specificity of MRE for detecting endoscopic ulcers were 66.7% (95% CI, 52.1–79.2%) and 69.2% (95% CI, 48.2–85.7%), respectively.ConclusionRadiologic ulcers are visible in children with newly diagnosed ileal CD, although inter-radiologist agreement is only fair. The presence of ulcers is associated with clinical laboratory inflammatory markers as well as other MRE findings of disease activity and is an additional imaging finding that can be used to evaluate intestinal inflammation.

Utilizing CT imaging for evaluating late gastrointestinal tract side effects of radiotherapy in uterine cervical cancer: a risk regression analysis

BackgroundRadiotherapy (RT) is effective for cervical cancer but causes late side effects (SE) to nearby organs. These late SE occur more than 3 months after RT and are rated by clinical findings to determine their severity. While imaging studies describe late gastrointestinal (GI) SE, none demonstrate the correlation between the findings and the toxicity grading. In this study, we demonstrated the late GI toxicity prevalence, CT findings, and their correlation.MethodsWe retrospectively studied uterine cervical cancer patients treated with RT between 2015 and 2018. Patient characteristics and treatment(s) were obtained from the hospital’s databases. Late RTOG/EORTC GI SE and CT images were obtained during the follow-up. Post-RT GI changes were reviewed from CT images using pre-defined criteria. Risk ratios (RR) were calculated for CT findings, and multivariable log binomial regression determined adjusted RRs.ResultsThis study included 153 patients, with a median age of 57 years (IQR 49–65). The prevalence of ≥ grade 2 RTOG/EORTC late GI SE was 33 (27.5%). CT findings showed 91 patients (59.48%) with enhanced bowel wall (BW) thickening, 3 (1.96%) with bowel obstruction, 7 (4.58%) with bowel perforation, 6 (3.92%) with fistula, 0 (0%) with bowel ischemia, and 0 (0%) with GI bleeding. Adjusted RRs showed that enhanced BW thickening (RR 9.77, 95% CI 2.64–36.07, p = 0.001), bowel obstruction (RR 5.05, 95% CI 2.30–11.09, p < 0.001), and bowel perforation (RR 3.82, 95% CI 1.96–7.44, p < 0.001) associated with higher late GI toxicity grades.ConclusionsOur study shows CT findings correlate with grade 2–4 late GI toxicity. Future research should validate and refine these findings with different imaging and toxicity grading systems to assess their potential predictive value.

EP142 - "Unravelling the Enigma: Navigating the Diagnostic Dilemma of Abdominal Toxoplasmosis"

Abstract Introduction Abdominal toxoplasmosis, an infrequent yet medically significant manifestation of Toxoplasma infection, primarily caused by the protozoan parasite Toxoplasma gondii. Although toxoplasmosis can affect various organs, its occurrence in the abdominal region introduces unique diagnostic complexities, presenting symptoms such as abdominal pain, gastrointestinal disruptions, and systemic complications. Case Report In a notable case, a middle-aged patient presented with perplexing gastrointestinal symptoms, including nausea, vomiting, abdominal pain, and irregular bowel habits. With a history of anaemia and thrombocytopenia necessitating transfusions and yielding inconclusive bone marrow biopsies, the patient underwent OGD and colonoscopy with biopsies during initial management, revealing a hiatus hernia and diverticulosis that did not explain the symptoms. Despite being discharged pending biopsy results, subsequent normal findings failed to clarify. Upon readmission with persistent gastrointestinal complaints, a CTAP revealed two suspicious neoplastic focal areas of small bowel wall thickening and enlarged mesenteric lymph nodes. The MDT discussions ensued to rule out malignancy, leading to a follow-up PET scan suggesting nodal disease, raising concerns about lymphoma, small bowel adenocarcinoma, or carcinoid tumour and recommended an ultrasound-guided lymph node biopsy, 5 HIAA if asymptomatic, and diagnostic laparoscopy if symptomatic or obstructed. Subsequent core biopsy of a neck lymph node unveiled appearances consistent with toxoplasmosis, prompting treatment with anti-parasitic drugs. The patient awaits capsule endoscopy, and a follow-up CT scan displayed a reduction in bowel lesions and lymph nodes. Conclusion This case highlights the swift and precise identification of toxoplasmosis, resulting in an optimal patient outcome. The clinical manifestations of toxoplasmosis are diverse and lack distinct characteristics, making it challenging to definitively diagnose, particularly in immunocompetent individuals.

Findings of Abdominal Computed Tomography In COVID-19 Patients with Abnormal Abdominal Symptoms In Siriraj Hospital

Background: The coronavirus (COVID-19) is caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Chest imaging findings of COVID-19 disease have been widely published. Only a few studies of abdominal imaging findings have been documented. The majority of these studies demonstrate thrombotic events associated with COVID-19. Previous studies were mainly conducted in the USA, Europe and China which limited the applicability in Southeast Asia (SEA) including Thailand. Objective: To provide a summary of various abdominal imaging findings of COVID-19 patients admitted to xxx Hospital with findings associated with clinical outcomes. Materials and Methods: All CT abdominal imaging of adult patients who tested positive for COVID-19 performed from January 1st, 2020 to August 31st, 2022 were retrospectively reviewed. We collected clinical data, abdominal signs and symptoms, laboratory data and various CT findings, for example; bowel-wall thickening, bowel ischemia, fluid-filled colon and bleeding manifestations. The clinical outcomes were gathered as death confirmation, invasive mechanical ventilation, days of invasive mechanical ventilation and days of hospitalization. Results: A large number of patients who had stage 3-5 chronic kidney disease (CKD), abdominal distension, abnormal bowel findings and longer days of hospitalization were significantly observed in a group with worse clinical outcomes. Abnormal intestinal imaging findings were related to a higher risk of worse outcomes, invasive mechanical ventilation, death and days of hospitalization without statistical significance. Conclusion: Abdominal CT scans performed on COVID-19 patients frequently revealed abnormal bowel findings, which were strongly associated with poor clinical outcomes. Radiologists need to be concerned about abnormal bowel findings and point them out to clinicians and surgeons.

Diffusely Infiltrative Small Bowel Disease.

Multiple infiltrative disorders can affect the small bowel, often resulting in diffuse small bowel wall thickening. These infiltrative disorders can manifest owing to various factors such as an influx of immunologic or neoplastic cells or the accumulation of substances within one or more layers of the intestinal wall. Although there can be considerable overlap in the appearances of infiltrative diseases on cross-sectional images, a comprehensive understanding of more specific ancillary imaging features and clinicopathologic correlation can substantially narrow the differential diagnosis. The radiologist can be instrumental in synthesizing the clinical and imaging information and guiding subsequent workup. The authors present a comprehensive review of the infiltrative disorders that commonly involve the small bowel. These disorders are organized on the basis of their pathophysiologic features, with multiple illustrative case examples to enhance understanding of these entities. CT and MRI are currently the most commonly used imaging modalities for evaluating small bowel disorders, and this review is focused on these two modalities. Detailed information regarding the pathologic features, clinical presentation, and imaging findings of these infiltrative disorders is provided to aid radiologists in recognizing and differentiating these conditions. ©RSNA, 2024.

Four intestinal ultrasound scores and bowel wall thickness alone correlated well with pediatric ulcerative colitis disease activity.

Intestinal ultrasound (IUS) is a noninvasive tool in ulcerative colitis (UC), but scoring systems have mostly been developed for adults, Crohn's disease, and flaring UC. Our aim was to evaluate the performance of bowel wall thickness (BWT) and four IUS scores in pediatric patients with newly diagnosed UC. Patients <18 years old with suspected UC were prospectively enrolled. Baseline IUS was done, and ulcerative colitis intestinal ultrasound score (UC-IUS), Milan criteria, simple pediatric activity ultrasound score (SPAUSS), and Civatelli index were calculated. Mayo endoscopic segment subscore, pediatric ulcerative colitis activity index (PUCAI), and biomarkers were correlated with IUS using nonparametric and receiver operating characteristic analyses. Fifty-two patients (56% male, median age 13.9 years, interquartile range [IQR] 11.2-16.3) with 206 colon segments were included. Patients who needed hospitalization (n = 27/52) had significantly worse IUS (BWT and all scores) compared to those not hospitalized. For all patients, IUS scores and BWT significantly correlated with baseline endoscopic, clinical, and biochemical disease activity (rho = 0.32-0.67, p < 0.05). BWT (τb = 0.53), UC-IUS (τb = 0.55), and Milan (τb = 0.52) had the strongest endoscopic correlations. For differentiating between endoscopic disease severity, BWT, UC-IUS, and Milan, had the highest areas under the curve (0.89-0.93). Using BWT alone, a thinner cut-off had improved sensitivity while maintaining high specificity: ≥2.5 mm for moderate/severe endoscopic inflammation (sensitivity 66%; specificity 94%) and ≥3.5 mm for severe endoscopic inflammation (sensitivity 92%; specificity 86%). BWT and all four IUS scores correlated well with endoscopic, clinical, and biochemical disease activity, and was another useful marker of severity in identifying patients needing hospitalization. Pediatric patients needed a thinner BWT cut-off, which should be accounted for when developing pediatric-specific scores. BWT alone may be just as clinically useful as composite US scores.

Intestinal ultrasound for follow-up after 24 weeks of biological therapy in inflammatory bowel disease patients: an Egyptian center experience during the COVID-19 pandemic

BackgroundInflammatory bowel disease is a chronic inflammatory condition of the gut. It has two major subtypes Crohn’s disease and ulcerative colitis. The follow-up consists of radiologic, molecular, endoscopic, and histological assessments. Intestinal ultrasound (IUS) is a noninvasive measure that provides future hope in guiding the management of IBD patients. This study is to assess the effectiveness of IUS in IBD patients’ follow-up in our tertiary center during the pandemic. This is a prospective observational study during the COVID-19 pandemic. We used IUS to assess activity of IBD at baseline and at 6-month follow-up of patients on maintenance biological therapy using the following parameters: bowel haustrations, stratification, bowel wall thickness (BWT), Doppler sign (Limberg classification), presence of lymph nodes, or fibrofatty infiltration, echogenicity of the bowel, and presence of fistulae or abscesses. We compared the IUS with other radiologic parameters, histologic, and endoscopic scores at baseline before therapy, while we compared IUS with clinical scores and laboratory parameters before and after 24 weeks of biological treatment.ResultsThe cohort included 50 known IBD patients from June 2021 to January 2022. The laboratory studies showed a significant improvement in the hemoglobin indices, CRP, and fecal calprotectin from baseline and after 24 weeks. BWT, lumen diameter, lymph node presence, inflammatory signs, and Doppler activity signs were the most significant parameters in detecting improvement. However, there was no significant correlation between fecal calprotectin levels and ultrasound parameters. There was a positive correlation between MR and CT enterography, endoscopic parameters, and IUS parameters at baseline.ConclusionsIUS is an effective tool for follow-up of IBD patients especially during the pandemic periods.

Different imaging techniques’ diagnostic efficacy for Crohn’s disease activity and external validation and comparison of MDCTAs, SES-CD and IBUSSAS

BackgroundCrohn’s disease (CD) is a chronic inflammatory disease of the digestive tract with unknown etiology. It follows a relapse-remission pattern, making disease activity assessment crucial for treatment. Our study aims to evaluate the diagnostic accuracy of various imaging modalities and to validate and compare the International Bowel Ultrasound Segmental Activity Score (IBUS-SAS), the multidetector computed tomography enterography score (MDCTEs), and the simplified endoscopic activity score for Crohn’s disease (SES-CD).MethodsWe assessed diagnostic performance using the CD Activity Index (CDAI). We first categorized patients into remission and active groups. For those in the active stage, we further categorized them into mild/moderate and severe activity groups. We used Spearman rank correlation to evaluate the relationships among IBUS-SAS, bowel wall thickness (BWT), Color Doppler imaging signal (CDS), inflammatory fat (i-fat), bowel wall stratification (BWS), and clinical inflammatory indicators.ResultsA total of 103 CD patients were evaluated. The IBUS-SAS cut-off for remission and activity was 23.8, with an AUC of 0.923, sensitivity of 91.4%, and specificity of 84.8%. The SES-CD had an AUC of 0.801, sensitivity of 62.9%, and specificity of 84.4% at a cut-off of 4.5. The MDCTEs showed an AUC of 0.855, sensitivity of 77.1%, and specificity of 75.8% for a cut-off of 6.5. The Delong test revealed significant differences in diagnostic efficacy when comparing IBUS-SAS to SES-CD and IBUS-SAS to MDCTEs. In the group of mild or moderate-to-severe active, the IBUS-SAS had an AUC of 0.925, sensitivity of 83.7%, and specificity of 88.9% at a cut-off of 40. The SES-CD exhibited an AUC of 0.850, sensitivity of 90.7%, and specificity of 70.4% at a cut-off of 8.5. MDCTEs showed an AUC of 0.909, sensitivity of 83.7%, and specificity of 85.2% at a cut-off of 8.5. During Delong test, the IBUS-SAS, MDCTEs, and SES-CD showed no significant differences in assessing moderate-to-severe activity. Both IBUS-SAS and ultrasound parameters correlated with certain serum indicators (p < 0.05), although only weakly to moderately (all r < 0.5).ConclusionThe IBUS-SAS, MDCTEs and SES-CD can evaluate disease remission/active and mild/moderate-to-severe active in CD, and IBUS-SAS offers the potential to precisely define CD activity.

Reliability of Intestinal Ultrasound for Evaluating Crohn’s Disease Activity Using Point-of-care and Central Reading

Intestinal ultrasound (IUS) is increasingly used to assess Crohn's disease (CD) activity in clinical practice. However, application in clinical trials has been limited by heterogeneous scoring methods and concerns about reliability. We aimed to determine the inter- and intra-rater reliability of locally and centrally read IUS parameters for evaluating CD using prospectively performed scans. Twenty-four participants with CD and 6 gastroenterologists participated in a 2-day workshop where each participant underwent 6 IUS scans in total. Eight IUS parameters (bowel wall thickness [BWT], bowel wall stratification [BWS], color Doppler signal [CDS], inflammatory mesenteric fat [i-fat], submucosal prominence, submucosal layer thickness, haustra coli/peristalsis, and affected segment length) and an overall measure of sonographic disease activity were blindly assessed by the 6 local readers and 4 central gastroenterologist-sonographers. Reliability was quantified using intraclass correlation coefficients (ICCs). Institutional review board approval was granted for this study (12938). Five IUS parameters demonstrated at least moderate (ICC ≥0.41) inter- and intra-rater reliability when local and central reading was performed (BWT, CDS, i-fat, submucosal prominence, and affected segment length). Reliability was generally better with central, in distinction to local, reading. ICCs for BWS and i-fat were highest when evaluated as binary outcomes. Sensitivity analyses demonstrated that IUS parameters are most reliable when evaluated in the worst affected segment. Fair reliability was observed when local readers identified the worst affected segment. Local and central reading of IUS demonstrated at least moderate inter- and intra-rater reliability for several parameters. This study supports refining existing activity indices and incorporating IUS central reading into clinical trials.

Ultrasound Characteristics Can Predict Response to Biologics Therapy in Stricturing Crohn's Disease.

Stricture is a common complication in Crohn's disease (CD). Accurate identification of strictures that poorly respond to biologic therapy is essential for making optimal therapeutic decisions. The aim of this study was to determine the association between ultrasound characteristics of strictures and their therapeutic outcomes. Consecutive CD patients with symptomatic strictures scheduled for biologic therapy were retrospectively recruited at a tertiary hospital. Baseline intestinal ultrasound was conducted to assess stricture characteristics, including bowel wall thickness, length, stratification, vascularity, and creeping fat wrapping angle. Patients were followed up for a minimum of 1 year, during which long-term outcomes including surgery, steroid-free clinical remission, and mucosal healing were recorded. Statistical analyses were performed. A total of 43 patients were enrolled. Strictures were located in the ileocecal region (39.5%), colon (37.2%), anastomosis (20.9%), and small intestine (2.3%). The median follow-up time was 17 months (interquartile range 7-25), with 27 patients (62.8%) undergoing surgery. On multivariant analysis, creeping fat wrapping angle > 180° (odds ratio: 6.2, 95% confidence interval [CI]: 1.1-41.1) and a high Limberg score (odds ratio: 2.3, 95% CI: 1.4-6.0) were independent predictors of surgery, with an area under the curve of 0.771 (95% CI: 0.602-0.940), accuracy of 83.7%, sensitivity of 96.3%, and specificity of 62.5%. On Cox survival analysis, creeping fat >180° was significantly associated with surgery (hazard ratio, 5.2; 95% CI: 1.2-21.8; P = 0.03). In addition, creeping fat was significantly associated with steroid-free clinical remission ( P = 0.015) and mucosal healing ( P = 0.06). Intestinal ultrasound characteristics can predict outcomes in patients with stricturing CD who undertook biologic therapy.

Classifying Inflammation on Intestinal Ultrasound Images and Cineloops - A Learning Curve Study.

Intestinal ultrasound has become a crucial tool for assessing inflammation in patients with inflammatory bowel disease, prompting a surge in demand for trained sonographers. While educational programs exist, the length of training needed to reach proficiency in correctly classifying inflammation remains unclear. Our study addresses this gap partly by exploring the learning curves associated with the deliberate practice of sonographic disease assessment, focusing on the key disease activity parameters of bowel wall thickness, bowel wall stratification, color Doppler signal, and inflammatory fat. Twenty-one novices and six certified intestinal ultrasound practitioners engaged in an 80-case deliberate practice online training program. A panel of three experts independently graded ultrasound images representing various degrees of disease activity and agreed upon a consensus score. We used statistical analyses, including mixed-effects regression models, to evaluate learning trajectories. Pass/fail thresholds distinguishing novices from certified practitioners were determined through contrasting-groups analyses. Novices showed significant improvement in interpreting bowel wall thickness, surpassing the pass/fail threshold, and reached mastery level by case 80. For color Doppler signal and inflammatory fat, novices surpassed the pass/fail threshold but did not achieve mastery. Novices did not improve in assessing bowel wall stratification. We found considerable individual and group-level differences in learning curves supporting the concept of competency-based training for assessing bowel wall thickness, color Doppler signal and inflammatory fat. However, despite practice over 80 cases, novices did not improve in their interpretation of bowel wall stratification, suggesting that a different approach is needed for this parameter.

Intestinal Ultrasound, Fecal Calprotectin, and Their Combination to Predict Endoscopic Mucosal Healing in Ulcerative Colitis: A Real-Life Cross-Sectional Study.

The development of noninvasive markers to assess mucosal healing in ulcerative colitis (UC) is essential in the treat-to-target era. The aim of this study was to evaluate the performance of intestinal ultrasound (IUS), fecal calprotectin (FC), and their combination to assess mucosal healing in UC patients. All consecutive patients between January 2021 and September 2022 with UC who underwent a complete colonoscopy and IUS and/or an FC test within 4 weeks were included in a prospective cohort. Bowel wall thickness (BWT) and the color Doppler signal (CDS) were assessed for each segment. Endoscopic mucosal healing was defined by a Mayo score of 0 to 1. A total of 61 patients were included, of whom 79% showed endoscopic healing (26 Mayo 0 and 11 Mayo 1). Among the patients, 16 (27.6%) of 58 had a BWT <3mm, and 41 (70.7%) of 58 had no CDS. The sensitivity, specificity, positive predictive value, and negative predictive value of a BWT <3mm to predict endoscopic mucosal healing were 37%, 77%, 72%, and 44%, respectively. The association of FC <150 µg/g, a BWT <3mm, and a CDS = 0 increased the specificity and positive predictive value (sensitivity 33%, specificity 94%, positive predictive value 89%, negative predictive value 48%). The combination of a normal IUS, no rectal bleeding, and an FC <172 µg/g identified all patients with mucosal healing. The combination of IUS and FC is effective in identifying mucosal healing in UC. Noninvasive evaluation of mucosal healing is possible for most UC patients.

Intestinal ultrasound for intestinal Behçet disease reflects endoscopic activity and histopathological findings.

Intestinal Behçet disease is typically associated with ileocecal punched-out ulcers and significant morbidity and mortality. Intestinal ultrasound is a noninvasive imaging technique for disease monitoring. However, no previous reports have compared intestinal ultrasound with endoscopic ulcer activity or histopathological findings for intestinal Behçet disease. We evaluated the usefulness of intestinal ultrasound for assessing the activity of ileocecal ulcers in intestinal Behçet disease. We retrospectively compared intestinal ultrasound findings with 73 corresponding endoscopic images and 6 resected specimens. The intestinal ultrasound findings were assessed for 7 parameters (bowel wall thickness, vascularity [evaluated using the modified Limberg score with color Doppler], bowel wall stratification, white-plaque sign [strong hyperechogenic lines or spots], mesenteric lymphadenopathy, extramural phlegmons, and fistulas), and endoscopic ulcer activity was classified into active, healing, and scar stages. Histopathological findings were evaluated by consensus among experienced pathologists. Bowel wall thickness (P< 0.001), vascularity (P< 0.001), loss of bowel wall stratification (P= 0.015), and white-plague sign (P= 0.013) were significantly exacerbated in the endoscopic active ulcer stage. Receiver operating characteristic curve analysis revealed that a bowel wall thickness of > 5.5 mm (sensitivity 89.7%, specificity 85.3%) was potentially useful for detecting active lesions. When compared with histopathological findings, an increase in bowel wall thickness reflected the ulcer marginal ridge, and the white-plaque sign reflected the ulcer bottom. Intestinal ultrasound is useful for monitoring intestinal ulcer activity in intestinal Behçet disease.

A Middle-Aged Patient Living with HIV (PLHIV), Presented with Persistent Hiccups, Imbalance, and Multifocal Myoclonus Secondary to Disseminated Tuberculosis

AbstractA middle aged male presented with chronic diarrhoea, persistent hiccups and unsteadiness while walking. His illness had subacute onset and progressive course. Clinically patient had cachexia, pallor, oral thrush and hepatosplenomegaly. On neurological examination, he had fine tremors, gait ataxia, and multifocal myoclonus. Investigations revealed normochromic normocytic anemia, transaminitis, hyponatremia and cerebrospinal fluid pleocytosis(lymphocytic predominance). Brain MRI revealed diffuse patchy meningeal enhancement; CECT abdomen showed circumferential bowel wall thickening, hepatosplenomegaly and necrotic lymphadenopathy. CECT chest exhibited mediastinal lymphadenopathy alongwith centrilobular nodular opacities. Sputum GeneXpert® was positive for mycobacterium tuberculosis with sensitivity to rifampicin. His serology for human immunodeficiency virus was positive. He was diagnosed as disseminated tuberculosis with tuberculer meningitis which caused persistent hiccups, gait abnormaliy and multifocal myoclonus. His symptom resolved with anti tubercular therapy. We aim to highlight here that myoclonus is a rare occurrence with tubercular meningitis.

Early Intestinal Ultrasound in Severe Ulcerative Colitis Identifies Patients at Increased Risk of 1-Year Treatment Failure and Colectomy

Abstract Background and Aims Reliable and easily accessible objective markers of disease activity to predict long-term treatment outcomes in severe ulcerative colitis [UC] are missing. We aimed to investigate if intestinal ultrasound [IUS] might predict long-term outcomes in hospitalised patients with severe UC, treated with intravenous [IV] corticosteroids. Methods Hospitalised patients with severe UC and IUS inflammation (bowel wall thickness [BWT] &amp;gt; 3.0 mm) starting IV corticosteroids were recruited at three university hospitals in Denmark. IUS was performed before treatment and 48 ± 24 h, 6 ± 1 days, and 3 months after treatment initiation. Time until colectomy or need for new interventions was registered together with Mayo score at 3 months and partial Mayo score [pMayo] at 12 months. Follow-up time was 12 months. Results In the final analysis, 56 patients were included; 45 [80%] patients needed intervention, including nine colectomies, during the 12-month follow-up. After 48 ± 24 h, no patient with a BWT &amp;lt; 3 mm needed a colectomy, p = 0.04. BWT ≥ 4 mm showed an increased risk of colectomy {odds ratio 9.5 (95% confidence interval [CI] 1.5–186), p = 0.03}, whereas a BWT ≥ 3 mm showed an increased risk of intervention (3.6 [1.1–12.5], p = 0.03). A BWT ≥ 4 mm resulted in a significantly shorter time until both colectomy, p = 0.03, and treatment intensification (mean days 75 [95% CI 24–127] vs 176 [119–233], p = 0.005). However, neither IUS parameters nor pMayo score, C-reactive protein [CRP], haemoglobin, or p-albumin could predict remission at 3 and 12 months. Conclusion BWT, assessed at 48 h post intravenous corticosteroid initiation in patients hospitalised with severe UC, may identify patients with an increased risk of short- and long-term colectomy and predict a more aggressive short-term disease course.