Lower Gastrointestinal Endoscopy Research Articles

Corrigendum: Adherence to European society of gastrointestinal endoscopy quality performance measures for upper and lower gastrointestinal endoscopy: a nationwide survey from the Italian society of digestive endoscopy

Corrigendum: Adherence to European society of gastrointestinal endoscopy quality performance measures for upper and lower gastrointestinal endoscopy: a nationwide survey from the Italian society of digestive endoscopy

A review of bioinspired locomotion in lower GI endoscopy

Abstract Flexible endoscopy is the gold standard modality for diagnosis and therapeutic intervention of various colorectal conditions. A high bar is currently set for any new technology to replace the current modern colonoscope, but limitations do exist. For a robotic system to gain acceptance, ideally a clear advantage over the established standard needs to be demonstrated. The application of robotic technology inspired by locomotion observed in animals has been demonstrated in many fields including colonoscopy. A myriad of novel concepts has been proposed, which can overcome the anatomical and technical challenges. This review discusses novel and innovative examples of bioinspired robotic locomotion in the colon with a detailed comparison of studies alongside separating the discussion by animal sections of insect, marine and reptile locomotion. We also discuss the current advantages and challenges a bioinspired robot will bring to the colon. Bioinspired robotics in the colon is an exciting field of research with the potential to improve upon current existing high standards of practice in colonoscopy. By addressing areas that the conventional colonoscope is weaker in, studies are demonstrating improvement upon current limitations of standard practice and providing an insight into new methods of engineering and fabrication. Focus on the technological, mechanical and regulatory barriers is key to achieve acceptance into standard practice and will allow the aspiration of a safe, low discomfort, low cost and potentially fully autonomous robotic colonoscope to be not too distant in the future of colonoscopy.

The Fundamentals of Inflammatory Bowel Disease Management in Pregnancy: A Practical Review for the Gastroenterologist.

This narrative review explores the management of Inflammatory Bowel Disease (IBD) during pregnancy, emphasizing its unique challenges to maternal and fetal health, particularly within the Canadian Gastroenterology setting. Seven key principles are highlighted: 1) Preconception counselling, aiming for steroid-free remission confirmed by objective markers, should be routine for female IBD patients. 2) Medication safety, with an eye to future pregnancies, should be addressed upon initiation. Methotrexate and small molecules are contraindicated during pregnancy, while most 5-ASA therapies, biologics, and thiopurines can be continued throughout pregnancy and breastfeeding. Steroids, though not without risks, can be utilized if necessary. 3) Routine monitoring during remission should include serum biomarkers and fecal calprotectin each trimester. 4) Routine endoscopy and imaging are not required, but if indicated, lower GI endoscopy, ultrasound, and unenhanced MRI can be used. Computed tomography and gadolinium enhanced MRI should be avoided. 5) Caesarean section is advised for patients with previous ileal pouch surgeries or active perianal disease, but other patients should follow obstetric indications for delivery. 6) Postpartum period may see more active disease, requiring continued monitoring. Breastfeeding is encouraged, and routine childhood vaccinations are advised, but live vaccinations in the first 6 months warrant detailed review. 7) Complex IBD patients may benefit from a multidisciplinary approach with robust communication between gastroenterologists and obstetricians.

Diagnostic Yield of Small Bowel Videocapsule Endoscopy in Patients with Iron Deficiency Anemia. A Systematic Review and meta-analysis.

Gastrointestinal (GI) bleeding or malabsorption represents the most frequent aetiologies of iron deficiency anemia (IDA). The cause of IDA remains undetermined in ~10% to 20% of patients undergoing upper and lower GI endoscopies. In this scenario, a small bowel examination with videocapsule endoscopy (VCE) is recommended. We performed a systematic review with meta-analysis to evaluate the diagnostic yield of VCE in patients with IDA without overt bleeding, assessing the prevalence of either any lesion or lesions at high potential of bleeding. A computerized literature search was performed using relevant keywords to identify all the pertinent articles published until March 2023. Twelve studies with a total of 1703 IDA patients (Males: 47%; age range: 19-92y) were included in this systematic review. The diagnostic yield of VCE for overall lesions in the small bowel was 61% (95% CI=44-77; 95 CI=97.2-98.1; I2=97.7%). When analyzing only small bowel lesions likely responsible of IDA, the diagnostic yield was 40% (95% CI=27-53; 95% CI=95.3-97; I2=96.3%). VCE plays a relevant role in the diagnostic work-up of patients with IDA without overt bleeding with a satisfactory diagnostic yield.

Clinicoetiological profile of patients with gastrointestinal bleed presenting to a tertiary care hospital in Kumaon Region of Uttarakhand

Background: Gastrointestinal (GI) bleed is a common cause of medical emergency resulting in significant morbidity and mortality. GI bleeding can be classified as upper (bleeding source proximal to the ligament of Treitz) and lower (bleeding source distal to the ligament of Treitz). Aims and Objectives: The present study was aimed to determine the current clinicoetiological profile of GI bleeding in Kumaon Region of Uttarakhand. Materials and Methods: All patients presented with GI bleed (GIB) to outpatient department and Emergency department or developed the GIB during hospitalization are managed in intensive care unit (preferably) and high-dependency unit. Results: Both upper and lower GI endoscopy were twice normal in 2.7% of patients (obscure bleeding). On upper GI endoscopy findings showing esophageal varices (45.83%), gastroesophageal varices (8.33%), isolated gastric varices (8.33%), gastric ulcer (8.33%), duodenal ulcer (6.25%), Mallory-Weiss tear (6.25%), erosive gastritis (6.25%), gastric antral vascular ectasia (4.16%), gastric carcinoma (4.16%), and Dieulafoy’s lesion (2.08%). Upper GIB (UGIB) had more mortality than lower GIB, among UGIB variceal bleed having higher mortality than non-variceal bleeding. Conclusion: Unlike the evidence from the west that peptic ulcer is the most common cause of upper gastrointestinal bleeding, we found varices as the common cause, followed by peptic ulcer and erosive gastritis. Hence, the variable spectrum of the etiology of the GIB seen in our country could represent either a true epidemiological difference or reflect skewed access to health care.

Incidence of persistent SARS-CoV-2 gut infection in patients with a history of COVID-19: Insights from endoscopic examination.

Background and study aims Gut infection is common during acute COVID-19, and persistent SARS-CoV-2 gut infection has been reported months after the initial infection, potentially linked to long-COVID syndrome. This study tested the incidence of persistent gut infection in patients with a history of COVID-19 undergoing endoscopic examination. Patients and methods Endoscopic biopsies were prospectively collected from patients with previous COVID-19 infection undergoing upper or lower gastrointestinal endoscopy (UGE or LGE). Immunohistochemistry was used to detect the presence of persistent SARS-CoV-2 nucleocapsid proteins. Results A total of 166 UGEs and 83 LGE were analyzed. No significant differences were observed between patients with positive and negative immunostaining regarding the number of previous COVID-19 infections, time since the last infection, symptoms, or vaccination status. The incidence of positive immunostaining was significantly higher in UGE biopsies than in LGE biopsies (37.34% vs. 16.87%, P =0.002). Smokers showed a significantly higher incidence of positive immunostaining in the overall cohort and UGE and LGE subgroups ( P <0.001). Diabetic patients exhibited a significantly higher incidence in the overall cohort ( P =0.002) and UGE subgroup ( P =0.022), with a similar trend observed in the LGE subgroup ( P =0.055). Conclusions Gut mucosal tissues can act as a long-term reservoir for SARS-CoV-2, retaining viral particles for months following the primary COVID-19 infection. Smokers and individuals with diabetes may be at an increased risk of persistent viral gut infection. These findings provide insights into the dynamics of SARS-CoV-2 infection in the gut and have implications for further research.

Training in basic gastrointestinal endoscopic procedures: a European Society of Gastrointestinal Endoscopy (ESGE) and European Society of Gastroenterology and Endoscopy Nurses and Associates (ESGENA) Position Statement.

This ESGE Position Statement provides structured and evidence-based guidance on the essential requirements and processes involved in training in basic gastrointestinal (GI) endoscopic procedures. The document outlines definitions; competencies required, and means to their assessment and maintenance; the structure and requirements of training programs; patient safety and medicolegal issues. 1:  ESGE and ESGENA define basic endoscopic procedures as those procedures that are commonly indicated, generally accessible, and expected to be mastered (technically and cognitively) by the end of any core training program in gastrointestinal endoscopy. 2:  ESGE and ESGENA consider the following as basic endoscopic procedures: diagnostic upper and lower GI endoscopy, as well as a limited range of interventions such as: tissue acquisition via cold biopsy forceps, polypectomy for lesions ≤ 10 mm, hemostasis techniques, enteral feeding tube placement, foreign body retrieval, dilation of simple esophageal strictures, and India ink tattooing of lesion location. 3:  ESGE and ESGENA recommend that training in GI endoscopy should be subject to stringent formal requirements that ensure all ESGE key performance indicators (KPIs) are met. 4:  Training in basic endoscopic procedures is a complex process and includes the development and acquisition of cognitive, technical/motor, and integrative skills. Therefore, ESGE and ESGENA recommend the use of validated tools to track the development of skills and assess competence. 5:  ESGE and ESGENA recommend incorporating a multimodal approach to evaluating competence in basic GI endoscopic procedures, including procedural thresholds and the measurement and documentation of established ESGE KPIs. 7:  ESGE and ESGENA recommend the continuous monitoring of ESGE KPIs during GI endoscopy training to ensure the trainee's maintenance of competence. 9:  ESGE and ESGENA recommend that GI endoscopy training units fulfil the ESGE KPIs for endoscopy units and, furthermore, be capable of providing the dedicated personnel, infrastructure, and sufficient case volume required for successful training within a structured training program. 10:  ESGE and ESGENA recommend that trainers in basic GI endoscopic procedures should be endoscopists with formal educational training in the teaching of endoscopy, which allows them to successfully and safely teach trainees.

Management of collagenous gastritis in children: Case series and literature review.

Collagenous gastritis (CG) is a rare histopathological finding on gastric biopsies in children. It is associated with abdominal pain and iron deficiency anemia, usually not respondent to oral iron supplements. The aim of this study was to describe our experience in the management of pediatric patients with CG. Moreover, we propose to review the literature on this topic.We retrospectively reviewed all pediatric patients diagnosed with CG at our centre from January 2014 to January 2019.Three pediatric patients (2 F, mean age 12.3) were diagnosed with CG during the study period. Two presented with moderate and one with severe anemia. Symptoms were abdominal pain, asthenia and headache in two and asthenia and abdominal pain in one. All underwent upper and lower gastrointestinalendoscopy. All were firstly started with oral iron supplements with no benefit, principally due to poor compliance secondary to the worsening of the epigastric pain and proton pump inhibitor resistance. Therefore, they underwent ferric carboxymaltose (FCM) infusion with good clinical and laboratory response. Patients received a mean of two infusions/year, with stable hemoglobin levels and no adverse outcomes.Our review failed to identify a consistent response to specific treatments. Considering the apparent benign nature of the disease, symptomatic and supportive treatments are advisable. Iron deficiency anemia is largely present and therapy with oral iron supplements is not always successful. In our study, FCM infusion was effective in increasing the key blood indices in patients who poorly tolerated oral supplements.

International Guideline for Idiopathic Inflammatory Myopathy-Associated Cancer Screening: an International Myositis Assessment and Clinical StudiesGroup (IMACS)initiative.

Adult-onset idiopathic inflammatory myopathy (IIM) is associated with an increased cancer risk within the 3 years preceding and following IIM onset. Evidence- and consensus-based recommendations for IIM-associated cancer screening can potentially improve outcomes. This International Guideline for IIM-Associated Cancer Screening provides recommendations addressing IIM-associated cancer risk stratification, cancer screening modalities and screening frequency. The international Expert Group formed a total of 18 recommendations via a modified Delphi approach using a series of online surveys. First, the recommendations enable an individual patient's IIM-associated cancer risk to be stratified into standard, moderate or high risk according to the IIM subtype, autoantibody status and clinical features. Second, the recommendations outline a 'basic' screening panel (including chest radiography and preliminary laboratory tests) and an 'enhanced' screening panel (including CT and tumour markers). Third, the recommendations advise on the timing and frequency of screening via basic and enhanced panels, according to risk status. The recommendations also advise consideration of upper or lower gastrointestinal endoscopy, nasoendoscopy and 18F-FDG PET-CT scanning in specific patient populations. These recommendations are aimed at facilitating earlier IIM-associated cancer detection, especially in those who are at a high risk, thus potentially improving outcomes, including survival.

Assessing the Correlation between Helicobacter Pylori Infection and Increased Incidence of Colorectal Cancer, Gastric Atrophy, and Intestinal Metaplasia

Aim: Our retrospective study was designed to explore the potential link between Helicobacter pylori (H. pylori) infection and the occurrence of colorectal cancer (CRC), gastric atrophy, and intestinal metaplasia.&#x0D; Material and Methods: We assembled two groups of 150 patients each, categorized based on their endoscopic biopsy results for H. pylori - one group testing positive (study group), the other negative (control group). All subjects underwent upper and lower gastrointestinal endoscopies, and we assessed their endoscopic gastric biopsy results as well as any indications of colorectal malignancies.&#x0D; Results: Our investigation established a noteworthy association between the presence of H. pylori infection and the incidences of CRC, gastric atrophy, and intestinal metaplasia (p

Post-Operative Cognitive Dysfunction in Elderly Patients Receiving Propofol Sedation for Gastrointestinal Endoscopies: An Observational Study Utilizing Processed Electroencephalography.

Propofol sedation is commonly administered during gastrointestinal (GI) procedures. The Patient State Index (PSI) is a processed electroencephalography (EEG) parameter obtained with the SedLine® Sedation Monitoring system (Masimo Corporation, Irvine, CA). When used to objectively assess the patient's level of consciousness, PSI may provide a more effective, safer titration of sedation during GI procedures. We hypothesize that having more or longer episodes of deep sedation as assessed by PSI (i.e., PSI<26) would correlate with developing new-onset or worsening post-operative cognitive dysfunction (POCD). This was a pragmatic, double-blinded observational study of 400 patients aged ≥65 years undergoing upper GI endoscopy, lower GI endoscopy, or a combined procedure utilizing propofol sedation at a tertiary-care [A1]academic medical center. The patients were monitored with the SedLine®Brain Function Monitor, software version 2 (Masimo Corporation, Irvine, CA), throughout the case, starting at baseline (i.e., before administration of propofol) and stopping at case end. We assessed the subjects' cognitive function via an in-person interview at baseline (pre-procedure) and telephone interviews at 1, 7 (±1), and 90 days after study enrollment. Cognitive function was assessed by administering the short blessed test (SBT), which is a validated brief cognitive screening appropriate for in-person and telephone administration. The correlations between the change in SBT score and the pre-defined parameters of PSI were not significant (allp-values >5%). There was a significant drop in SBT scores on day seven. Higher age was also significantly associated with a drop in SBT from baseline. Deep sedation, as evidenced by the number of times PSI was lower than 26, was not predictive of the change in SBT, nor was gender, total propofol dose, or vasoactive drug use during the procedure. The observed incidence of POCD after GI procedures with propofol sedation was low (1.3% at seven days and 2.95% at 90 days) and lower than at the baseline. Age was associated with a greater average decline in SBT score, although the absolute change was small (-0.067 per year of age increase). Deeper sedation, as documented by the PSI score, was not associated with a change in POCD measured with the SBT.

Progression of Diabetic Kidney Disease and Gastrointestinal Symptoms in Patients with Type I Diabetes.

(1) Background: Little research is conducted on the link between diabetic kidney disease (DKD) progression and diabetic gastroenteropathy in type 1 diabetes (T1D). (2) Methods. We performed a cross-sectional study with 100 T1D patients; 27 of them had progressive DKD, defined as an estimated glomerular filtration rate (eGFR) decline ≥3 mL/min/year or increased albuminuria stage, over a mean follow-up time of 5.89 ± 1.73 years. A newly developed score with 17 questions on gastrointestinal (GI) symptoms was used. Faecal calprotectin was measured by ELISA. Lower GI endoscopies were performed in 21 patients. (3) Results: The gastrointestinal symptom score demonstrated high reliability (Cronbach's α = 0.78). Patients with progressive DKD had higher GI symptom scores compared to those with stable DKD (p = 0.019). The former group demonstrated more frequent bowel movement disorders (p < 0.01). The scores correlated negatively with eGFR (r = -0.335; p = 0.001), positively with albuminuria (r = 0.245; p = 0.015), Hba1c (r = 0.305; p = 0.002), and diabetes duration (r = 0.251; p = 0.012). Faecal calprotectin levels did not differ between DKD groups significantly. The most commonly reported histopathological findings of enteric mucosa were infiltration with eosinophils, lymphocytes, plasmacytes, the presence of lymphoid follicles, and lymphoid aggregates. Conclusion: The progression of DKD is positively correlated with gastrointestinal symptoms; however, more research is needed to clarify the causal relationships of the gut-kidney axis in T1D.

Performance measures and quality standards in lower gastrointestinal endoscopy in Sri Lanka: A Prospective Observational Study

Introduction: Lower gastrointestinal endoscopy(LGIE) is the gold standard diagnostic tool in evaluating large bowel mucosal pathology. Guidelines have been developed to ensure the quality of the procedure with regard to patient safety and diagnostic accuracy. There is lack of data regarding quality of LGIE in Sri Lanka. &#x0D; Objective: Aim of this study is to assess the quality of LIGE performed in a tertiary care center in Sri Lanka by comparison with the standard quality indicators.&#x0D; Material and Methods: An prospective observational study was carried out in a tertiary care centre in Sri Lanka. Data of 210 patients who underwent LGIE (Both Colonoscopy and Flexible sigmoidoscopy) were recorded. Variables assessed were selected from quality indicators given in the guidelines of American Society of Gastroeterologists and European Society of Gastrointestinal Endoscopy. Data was compared with pre,intra and post procedure standard quality targets and degree of achievement evaluated with measuring Kappa values, categorized as, no, minimal, weak, moderate, substantial and almost perfect level of agreement.&#x0D; &#x0D; Results: All pre-procedure measures and 6 out of 7 intra procedure measures did not reach the target goals. Only 1 out of 14 indicators had almost perfect level of agreement. Majority, (i.e. 6 out of 14) had no agreement with the standard values.&#x0D; &#x0D; Conclusion: The quality of LGIE with-regard to all the aspects falls below the expected standards indicating poor quality of LGIE performed in a Sri Lankan tertiary care setting . Using a standard protocol based pro-forma and maintaining an electronic database will increase the quality of LGIE.

Inter-observer variability on the value of endoscopic images for the documentation of upper gastrointestinal endoscopy - our center experience

Abstract Objective: Endoscopy is an essential and invaluable diagnostic tool in the arsenal of every gastroenterologist. ESGE presented additional guidelines for standardized image documentation in upper and lower gastrointestinal endoscopy. Clinical disagreement is a common challenge in most, if not all, fields of medicine. Settling disagreements is important so as to find ways to minimize it. Clinical disagreement in gastroscopy may be demonstrated by studying the observer variability. Methods: We retrospectively recruited 120 random patients that underwent conventional upper gastrointestinal endoscopy between 2021-2022 in our Department of Gastroenterology, all of them performed by one endoscopist. As part of the study, all video-endoscopic recordings were stored using one internal server. In order to study interobserver variability, four physicians (endoscopists and gastroenterologist specialists) were invited to complete the questionnaire. Results: The interob-server variability in our study ranged from moderate to very good in the assessment of the esophagus, with the highest degree of agreement in response to questions concerning characteristic findings such as normal mucosa, esophagitis Class A Los Angeles, hiatal hernia for the esophagus endoscopic evaluation, benign ulcer niche in gastric antrum, normal gastric corpus mucosa, intestinal metaplasia and angiodysplasia in gastric corpus. The question on atrophic mucosa in the first and second part of the duodenum was the most difficult to agree upon. Conclusion: The present study found that the variability between observers in the assessment of images obtained from patients that underwent conventional upper gastrointestinal endoscopy in our center was acceptably good.

Evaluating the Safety and Quality of Diagnostic Colonoscopies Performed by General Surgeons: A Retrospective Study.

Introduction Colonoscopy, which is a challenging procedure and requires adequate time to master the skill, is the procedure of choice to visualize colonic mucosa to rule out many colonic pathologies. There is a dearth of published information from real clinical experiences regarding successful procedures and limitations. The end point of colonoscopy is the visualization of the cecal pole by intubating the cecum. Many Europeans and English health organizations recommend that the procedure should have a completion rate of around or above 90%. Gut preparation is an important determinant for a successful procedure and obviates the need for further invasive and/or expensive procedures such as imaging. The majority of colonoscopies are being performed by gastroenterologists (GI) throughout the world, and the role of a surgeon as an endoscopist is in debate. Before this study, neither a retrospective nor a prospective evaluation of the general surgeon's (GS) endoscopy's quality and safety had been evaluatedin our institution. Material and method This retrospective observational study was carried out from 1January2022 to 31August2022 in the Department of Surgery at Mayo Hospital, Lahore, to evaluate colonoscopy completion rates, reason for failure, and complications in terms of bleeding and perforation. All patients undergoing lower gastrointestinal endoscopy (LGiE), both elective and emergency, were included. Patients under 15 years of age and patients known to be hepatitis B-positive or hepatitis C-positive were excluded from the study. All relevant data were entered into a data sheet. Qualitative variables such as gender, cecal intubation, adjusted cecal intubation, gut preparation, reasons for failed colonoscopy, analgesia use, and complications (bleeding and perforation) were calculated as frequency and percentage. Quantitative data such as age and pain score were reported as mean and standard deviation (SD). Details obtained were tabulated and analyzed via the Statistical Package for Social Sciences (SPSS) version 29.0 (IBM SPSS Statistics, Armonk, NY). Results A total of 57 patientdata were collected; 35.1% (n=20) were female, and 64.9% (n=37) were males. The cecal intubation rate (CIR) was 49.1% (n=28), and the adjusted rate was 71.9%, excluding incompleteness due to mass obstructing lumen, 8.8% (n=5); planned left colonoscopy, 7% (n=4); sigmoidoscopy, 3.5% (n=2); distal stoma scope, 1.8% (n=1); and colonic stricture, 1.8% (n=1). The prevalent reason for failed colonoscopy was inadequate gut preparation (15.8% {n=9}). Other reasons include patientdiscomfort, 3.5% (n=2); looping of scope, 7% (n=4); and acute colonic angulation, 1.8% (n=1). No complications were recorded. Conclusion This study shows that colonoscopy can be done by general surgeons safely and effectively with adequate training. High rates of cecal intubation emerge during colonoscopies performed under deep sedation and by skilled colonoscopists. Adequate bowel preparatory regimen is compulsory for quality procedure.

Unexpected upper gastrointestinal polyps in patients with short bowel syndrome treated with teduglutide: need for close monitoring

BackgroundTeduglutide is a GLP-2 analog indicated for the treatment of short bowel syndrome (SBS) since 2015. Its efficacy in reducing parenteral nutrition (PN) has been shown in patients with SBS. ObjectivesBecause teduglutide is a trophic factor, the aim of this study was to assess risk of developing polypoid intestinal lesions during treatment. MethodsA retrospective study was conducted in 35 patients with SBS treated with teduglutide for ≥1 y in a home PN expert center. All patients underwent ≥1 follow-up intestinal endoscopy during treatment. ResultsIn the 35 patients, the small bowel length was 74 cm (IQR: 25–100), and 23 patients (66%) had a colon in continuity. Upper and lower gastrointestinal endoscopy was performed after a mean treatment duration of 23 mo (IQR: 13–27), and polypoid lesions were found in 10 patients (6 with a colon in continuity, 4 with an end jejunostomy) and no lesion in 25 patients. In 8 out of the 10 patients, the lesion was found in the small bowel. Five of these lesions presented an aspect of hyperplastic polyp without dysplasia, and 3 of a traditional adenoma with low-grade dysplasia. ConclusionsOur study highlights the importance of performing follow-up upper and lower gastrointestinal endoscopy in SBS patients treated with teduglutide and the potential need to make changes to the recommendations with respect to treatment initiation and follow-up.

Sporadic small intestinal hamartomatous polyp: Causative element for obscure gastrointestinal bleeding and iron deficiency anemia: A case report

The term “obscure gastrointestinal bleeding” (OGIB) refers to gastrointestinal (GI) bleeding that is persistent or recurring and that cannot be distinguished by upper or lower GI endoscopy as a standard diagnostic procedure. There is a rare clinical disorder known as hamartomatous polyp (HP) which is characterized by a tumor-like development made up of mature cells and normal tissue that is distributed or numbered abnormally. The Peutz–Jeghers syndrome, juvenile polyposis syndrome (JPS), and phosphatase and tensin homologue deleted on chromosome 10 (PTEN) hamartoma tumor syndromes are the collection of genetic illnesses. In this case report, a 59-year-old man reported with sporadic hamartomatous jejunal polyp and unusual signs of recurrent gastrointestinal bleeding manifested by melena. The patient was diagnosed with capsule endoscopy and the treatment to the patient was given. So, it is recommended to go through careful endoscopic examination followed by endoscopic removal of polyps to reduce the risk of complications such as bleeding, degeneration, and the risk of surgery.

Adherence to the World Cancer Research Fund/American Institute for Cancer Research cancer prevention recommendations throughout the life course and risk of colorectal cancer precursors.

Despite the increasing incidence in colorectal cancer (CRC) among the young population, the involvement of modifiable early-life exposures is understudied. We prospectively investigated the association of lifestyle score, which measures adherence to the 2018 World Cancer Research Fund/American Institute for Cancer Research (WCRF/AICR) cancer prevention recommendations, in adolescence and adulthood with risk of CRC precursors in 34,509 women enrolled in the Nurses' Health Study II. Participants reported adolescent diet in 1998 and subsequently underwent at least one lower gastrointestinal endoscopy between 1999 and 2015. Odds ratios (ORs) and 95% confidence intervals (CIs) were estimated using multivariable logistic regression for clustered data. During follow-up (1998-2015), 3036 women had at least one adenoma, and 2660 had at least one serrated lesion. In multivariable analysis, per unit increase in adolescent WCRF/AICR lifestyle score was not associated with risk of total adenoma or serrated lesions, in contrast to adult WCRF/AICR lifestyle score (OR = 0.92, 95% CI: 0.87-0.97, Ptrend = 0.002 for total adenoma; and OR = 0.86, 95% CI: 0.81-0.92, Ptrend < 0.001 for total serrated lesions). Adherence to the 2018 WCRF/AICR recommendations during adulthood but not during adolescence was associated with a lower risk of CRC precursors.

Biology of Pre-cancers and Opportunities for Cancer Interception - lesson from colorectal cancer susceptibility syndromes.

Hereditary gastrointestinal cancer is associated with molecular and neoplastic precursors which have revealed much about sporadic carcinogenesis. Therefore, an appreciation of constitutional and somatic events linked to these syndromes have provided a useful model for the development of risk models and preventative strategies. In this review we focus of two of the best characterised syndromes, Lynch syndrome (LS) and familial adenomatous polyposis (FAP). Our understanding of the neoplasia-immune interaction in LS has contributed to the development of immune mediated therapies including cancer preventing vaccines and immunotherapy for cancer precursors. Chemoprevention in LS with aspirin and non-steroidal anti-inflammatory drugs has also translated into clinical cancer, however the efficacy of such agents in FAP remains elusive when cancer is applied as an endpoint in trials rather than the use of 'indirect' endpoints such as polyp burden, and requires further elucidation of biological mechanisms in FAP. Finally, we review controversies in gastrointestinal surveillance for LS and FAP, including limitations and opportunities of upper and lower GI endoscopy in the prevention and early detection of cancer.

Evaluation of Solitary Rectal Ulcer Syndrome from Twenty-Four Iraqi Patients

Background: Solitary rectal ulcer syndrome (SRUS) is a rare benign rectal disorder that can present with bleeding, mucus passage, straining during defecation, constipation, rectal prolapse, and a feeling of incomplete evacuation. It is characterized by a combination of clinical findings, histological abnormalities, and symptoms. Since patients frequently come with lesions that are neither solitary nor ulcerated, the nomenclature of the syndrome is deceptive. Multiple factors may be implicated in the etiology and pathogenesis of the illness, which is usually linked to pelvic floor abnormalities. Objectives: To study the distribution of age and sex for this syndrome among a sample of Iraqi patients and to further characterize this syndrome in our population. Materials and Methods: A retro-prospective, descriptive single-center study with this research design was carried out at the Baghdad Gastroenterology and Hepatology Teaching Hospital involved reading reports from (1784) lower gastrointestinal endoscopies (sigmoidoscopy and colonoscopy) performed at the Baghdad Gastroenterology and Hepatology hospital over the course of fourteen months. Of those, twenty-four patients who met the requirements for the clinical, endoscopic, and histological diagnosis of SRUS were examined and monitored. Results: Sixteen patients were female and eight patients were male, mean age was (26.5±9.69), mean duration of symptoms until diagnosis was 12.083 months ±11.5. The most frequent symptom was bleeding per rectum (95.8%).All patients(100%) were subjected to several treatment options, they were advised on normal defecatory behavior and bowel habits, Sulfasalazine enema1-2gm/day for(3-6 months),sucralfate enema(2gm/day for 3months), only four patients(16.6%)ended with endoscopic treatment and two patients(8.3%)ended with surgery. Conclusion: SRUS is a chronic, benign disorder in young adults, often related to straining or abnormal defecation. SRUS remains a well-defined but nonspecific entity with varied presentation, characterized by a rectal lesion caused by straining during defecation. Clinicians, surgeons, and pathologists should be aware of the features of SRUS so that it is not confused with other conditions.