Clinico-radiological Features Research Articles

BDNF levels in serum and CSF are associated with clinicoradiological characteristics of aggressive disease in MS patients

BackgroundBDNF has increasingly gained attention as a key molecule controlling remyelination with a prominent role in neuroplasticity and neuroprotection. Still, it remains unclear how BDNF relates to clinicoradiological characteristics particularly at the early stage of the disease where precise prognosis for the further MS course is crucial.MethodsBDNF, NfL and GFAP concentrations in serum and CSF were assessed in 106 treatment naïve patients with MS (pwMS) as well as 73 patients with other inflammatory/non-inflammatory neurological or somatoform disorders using a single molecule array HD-1 analyser. PwMS were evaluated for highly active profiles by applying the aggressive disease course criteria proposed by ECTRIMS. Serum/CSF values were logarithmically transformed and compared across groups using one-way ANOVA, while correlations were calculated using Pearson’s correlations. ROC analysis and AUC comparisons for diagnostic performance of the three biomarkers were computed in an explorative analysis.ResultsSerum BDNF (sBDNF) concentrations were higher in treatment naïve pwMS with disease onset after the age of 40 years (p = 0.029), in pwMS with ≥2 gadolinium-enhancing lesions (p = 0.009) and with motor, cerebellar, cognitive or sphincter symptoms at onset (p = 0.036). BDNF correlated positively with NfL (r = 0.198, p = 0.014) and GFAP (r = 0.253, p = 0.002) in serum, but not in CSF. Neurological patients with an acute inflammatory relapse showed significantly higher sBDNF levels (p = 0.03) compared to somatoform controls, while patients without acute relapse did not differ from somatoform controls (p = 0.4). Better diagnostic performance was found for sBDNF than sNfL and sGFAP in differentiating between patients with vs. without 2 or more gadolinium-enhancing lesions (p < 0.05) and for sBDNF as compared to sNfL for separating patients with disease onset after vs. before age of 40 years.ConclusionIn pwMS, BDNF serum levels differ depending on disease-related characteristics, suggesting that not only inflammatory activity but also remyelination capacities may vary with disease severity. BDNF is increased when other biomarkers of neuroaxonal damage and neurodegeneration, such as NfL and GFAP, are elevated, possibly as a compensatory mechanism, and reflect possibly further pathophysiological aspects in MS beyond NfL and GFAP, probably including an apoptotic role for BDNF in neuroinflammation.

Challenges and Considerations in Diagnosing and Managing p16+-Related Oropharyngeal Squamous Cell Carcinoma (OPSCC) with Neck Metastasis: Implications of p16 Positivity, Tobacco Exposure, and De-Escalation Strategies.

The incidence of patients showing neck metastasis and no obvious primary tumor at the initial diagnostic evaluation or neck cancer of unknown primary (NCUP) is rising. It is estimated that a relevant part of these tumors arises in the tonsillar crypts or base of the tongue and are p16+-related. However, today, the detection rate of the primary tumor is suboptimal. Identifying the primary tumor and its biomolecular characterization is essential since it influences the treatment administered, possibly reducing radiation fields and providing de-escalation to primary surgical management. However, p16 IHC (immunohistochemistry) might not be sufficient to diagnose HPV-related OPSCC. The other subset of patients discussed are the HPV-positive patients who have a history of tobacco exposure and/or p53 mutations. Possible factors that could negatively influence the outcomes of these patients are investigated and discussed below. So, this paper aims to analyze the diagnostic, bio-molecular, clinico-radiological, morphological, prognostic and therapeutical aspects of p16-positive OPSCC, highlighting the possible bias that can occur during the diagnostic and prognostic process. A narrative review was conducted to investigate the biases in the diagnostic and therapeutic process of two groups of patients: those who are p16-positive but HPV-negative patients, and those who are p16-positive and HPV-positive with exposure to traditional risk factors and/or p53 mutations. The keywords used for the literature research included the following: NCUP, OPSCC, p16IHC, HPV testing, p16 positive HPV negative OPSCC, p16 positive HPV positive OPSCC, tonsillectomy, tobacco exposure, p53 mutations, cystic neck metastasis, extranodal extension (ENE), radiotherapy, de-escalation and neck neck dissection. HPV-positive OPSCC has specific clinico-radiological features. Bilateral tonsillectomy should be considered for the identification of the primary tumor. P16 IHC alone is not sufficient for diagnosing HPV-related OPSCC; additional detection methods are required. The role of tobacco exposure and p53 mutations should be investigated especially in cases of HPV-positive tumors. Extranodal extension (ENE) must be taken into consideration in the prognostic staging of HPV-positive tumors. Surgical primary treatment involving neck dissection (ND) and bilateral tonsillectomy followed by adjuvant radiation may represent the most appropriate approach for N3 cases. Diagnosis, prognosis and therapeutical implications must be addressed considering clinical, biomolecular and morphological aspects. At least today, the numerous biases that are still present influencing the diagnostic and prognostic process do not permit considering de-escalation protocols. A precise and accurate diagnosis is required in order to adequately stage and manage p16+ OPSCC, particularly with neck metastasis. The role of tobacco exposure and/or p53 mutations must be considered not only in p16+ OPSCC but especially in HPV-positive OPSCC. Until a more accurate diagnosis is possible, ENE should be considered even in p16+HPV+ OPSCC. Primary surgery with unilateral ND and bilateral tonsillectomy might be the treatment of choice given the numerous diagnostic and prognostic pitfalls. Therefore, it is inappropriate and risky to propose de-escalation protocols in routine clinical practice due to the risk of undertreatment.

Idiopathic apical orbital inflammation: clinical features and outcomes

BackgroundIdiopathic apical orbital inflammation (AOI) is used to describe inflammation involving the posterior third of the orbit where no specific cause can be identified. It is a rare entity in which the presentation can vary widely. We aim to describe a case series of patients with idiopathic AOI and their clinicoradiological features and visual outcomes. MethodRetrospective multi-centre case series involving patients with idiopathic AOI. ResultsSeven patients were included. The mean age was 50.3 ± 18.4 years (range: 31–84 years). The left eye was involved in the majority of patients (4, 57.1%), with the most common presenting clinical symptoms and signs being limitation of extraocular movements (6, 85.7%), periorbital pain (4, 57.1%), and blurred vision (4, 57.1%). Optic neuropathy was present in 3 (42.9%) patients. Three patients (42.9%) underwent an orbital biopsy, which were all consistent with nonspecific inflammation. Medical treatment was used for all patients in the form of oral steroids (5, 71.4%) or nonsteroidal anti-inflammatories (1, 14.3%). Two (28.6%) patients had additional immunosuppression. At last follow-up, 2 (28.6%) patients had achieved complete resolution of all of their symptoms, 2 (28.6%) patients had significant clinical improvement with mild residual disease, 2 (28.6%) had stable disease, and 1 (28.6%) was lost to follow-up. ConclusionIdiopathic AOI is a rare condition that can present with a wide variety of symptoms and be potentially blinding. Patients responded well to oral corticosteroids, but biopsy and additional immunosuppressive agents should be considered in those with recurrent, poorly responsive, or atypical disease.

Geriatric Traumatic Brain Injury: An Attempt to Predict Outcome Using a Nomogram.

With improving life expectancy, the proportion of geriatric patients is steadily increasing in the population and traumatic brain injury (TBI) in the elderly is becoming a problem demanding increasing attention from the health community. We attempted to identify factors that correlate with the outcome (as measured by the Glasgow Outcome Scale [GOS]) in elderly patients with TBI and make a prognostic model. A prospective analysis of 220 consecutive TBI patients aged ≥60 years admitted at our hospital was performed. Data about demography, comorbidities, mode of injury, clinico-radiological features, associated injuries, medical/surgical complications, and outcome was analyzed. Patients without imaging findings of TBI and patients with chronic subdural hematoma (SDH) and lesional intracranial hemorrhage were excluded. The mean age of patients was 69.17 years, with 70.9% being males. Motor vehicle accidents (44%) and ground-level falls (43.7%) were the most common modes of injury. Antiplatelets and anticoagulants were being taken by 14.6% and 1.8% of patients, respectively. Out of 220 patients, 124 patients had mild, 48 had moderate, and 48 had severe head injuries. Median Rotterdam score (RS) was 2. Forty-one patients underwent surgery. The outcome was favorable (GOS 4-5) in 54.1% and unfavorable (GOS 1-3) in 45.9% of patients, with the overall mortality at the end of 1 month being 30.9%. On multivariate regression analysis, Glasgow Coma Scale (GCS), RS, and coagulation abnormality were found to be independent prognostic factors; these three variables were then used to design a nomogram. In the absence of specific geriatric TBI prognostic models, a nomogram using GCS, RS, and coagulation abnormality can be used as a prognostic model.

Trends in Clinico-radiological and Laboratory Characteristics of All-Cause Meningoencephalitis in Western Rajasthan.

Meningoencephalitis encompasses the coexistence of meningitis and encephalitis in different proportions. This study aimed to delineate the clinical profile, laboratory parameters, radiological features, and outcome predictors of patients with meningoencephalitis. This prospective, observational, and descriptive study was conducted from July 2021 to March 2023. Patients satisfying the case definition of "meningitis" and "encephalitis" were enrolled. Mortality and morbidity (by modified Rankin Score [mRS]) were noted at discharge and at 1 and 3 months post-discharge. Of 102 patients recruited, among infectious meningoencephalitis cases, 28 (27.5%) were viral, 11 (10.8%) were pyogenic, 32 (31.4%) were tubercular, four (3.9%) each were rickettsial, atypical bacterial, and fungal, and three (2.9%) were parasitic. Among noninfectious etiologies, 12 (11.8%) were antineuronal antibody mediated, three (2.9%) had systemic inflammatory etiology, and one (1%) had carcinomatous meningitis. Cerebrospinal fluid (CSF) analysis showed the highest protein content (336.82 ± 251.26 mg/dL) and cell count (476.73 ± 999.16/mm 3 ) in pyogenic followed by tubercular (200.29 ± 174.28/mm 3 ) meningoencephalitis. CSF glucose was lowest in tubercular group (38.30 ± 20.29 mg/dL). Imaging showed leptomeningeal enhancement predominantly in tubercular group (89.7%) and limbic involvement in viral etiology (38.5%). Overall mortality was highest in fungal and rickettsial groups (three out of four patients died at 1 month in each group). Pyogenic, atypical bacterial, and systemic inflammatory meningoencephalitis had maximum temporal improvement in mRS at 1 month, while tubercular, viral, and antineuronal antibody-mediated meningoencephalitis had decrease of at least 1 mRS at 3 months. Fever, altered sensorium, speech disturbances, neck stiffness, albumin, total leukocyte count, erythrocyte sedimentation rate, C-reactive protein, kidney and liver function tests showed significant association with mortality. Tubercular, followed by viral meningoencephalitis, was the most common cause in our center in western India. Pyogenic, atypical bacterial, and systemic inflammatory groups had the best recovery at discharge, while fungal and rickettsial meningoencephalitis groups had worst mRS at 3 months.

Development of a nomogram-based model incorporating radiomic features from follow-up longitudinal lung CT images to distinguish invasive adenocarcinoma from benign lesions: a retrospective study

PurposeTo develop and validate a radiomic model for differentiating pulmonary invasive adenocarcinomas from benign lesions based on follow-up longitudinal CT images.MethodsThis is a retrospective study including 336 patients (161 with invasive adenocarcinomas and 175 with benign lesions) who underwent baseline (T0) and follow-up (T1) CT scans from January 2016 to June 2022. The patients were randomized in a 7:3 ratio into training and test sets. Radiomic features were extracted from lesion volumes of interest on longitudinal CT images at T0 and T1. Differences in radiomic features between T1 and T0 were defined as delta-radiomic features. Logistic regression was used to build models based on clinicoradiological (CR), T0, T1, and delta radiomic features and compute signatures. Finally, a nomogram based on the CR, T0, T1 and delta signatures was constructed. Model performance was evaluated for calibration, discrimination, and clinical utility.ResultsThe T1 radiomic model was superior to the other independent models. In the training set, it had an area under the curve (AUC) of 0.858), superior to the CR model (AUC 0.694), the T0 radiomic model (AUC 0.825), and the delta radiomic model (AUC 0.734). In the test set, it had an AUC of 0.817, again outperforming the CR model (AUC 0.578), the T0 radiomic model (AUC 0.789), and the delta radiomic model (AUC 0.647). The nomogram incorporating the CR, T0, T1 and delta signatures showed the best predictive performance in both the training (AUC: 0.906) and test sets (AUC: 0.856), and it exhibited excellent fit with calibration curves. Decision curve analysis provided additional validation of the clinical utility of the nomogram.ConclusionA nomogram utilizing radiomic features extracted from longitudinal CT images can enhance the discriminative capability between pulmonary invasive adenocarcinomas and benign lesions.

Development and validation of survival prediction models for patients with hepatocellular carcinoma treated with transcatheter arterial chemoembolization plus tyrosine kinase inhibitors.

Due to heterogeneity of molecular biology and microenvironment, therapeutic efficacy varies among hepatocellular carcinoma (HCC) patients treated with transcatheter arterial chemoembolization (TACE) and tyrosine kinase inhibitors (TKIs). We examined combined models using clinicoradiological characteristics, mutational burden of signaling pathways, and radiomics features to predict survival prognosis. Two cohorts comprising 111 patients with HCC were used to build prognostic models. The training and test cohorts included 78 and 33 individuals, respectively. Mutational burden was calculated based on 17 cancer-associated signaling pathways. Radiomic features were extracted and selected from computed tomography images using a pyradiomics system. Models based on clinicoradiological indicators, mutational burden, and radiomics score (rad-score) were built to predict overall survival (OS) and progression-free survival (PFS). Eastern Cooperative Oncology Group performance status, Child-Pugh class, peritumoral enhancement, PI3K_AKT and hypoxia mutational burden, and rad-score were used to create a combined model predicting OS. C-indices were 0.805 (training cohort) and 0.768 (test cohort). The areas under the curve (AUCs) were 0.889, 0.900, and 0.917 for 1-year, 2-year, and 3-year OS, respectively. To predict PFS, alpha-fetoprotein level, tumor enhancement pattern, hypoxia and receptor tyrosine kinase mutational burden, and rad-score were used. C-indices were 0.782 (training cohort) and 0.766 (test cohort). AUCs were 0.885 and 0.925 for 6-month and 12-month PFS, respectively. Calibration and decision curve analyses supported the model's accuracy and clinical potential. The nomogram models are hopeful to predict OS and PFS in patients with intermediate-advanced HCC treated with TACE plus TKIs, offering a promising tool for treatment decisions and monitoring patient progress.

Trends in Clinico-radiological and Laboratory Characteristics of All-cause Meningoencephalitis in Western Rajasthan

Trends in Clinico-radiological and Laboratory Characteristics of All-cause Meningoencephalitis in Western Rajasthan

Diagnostic Utility of Squash Smear Cytology in Chordoma: A Tertiary Care Center Experience.

Chordomas are rare notochordal tumors. They are suitable candidates for squash smear cytology (SSC) owing to their gelatinous consistency and destructive nature. SSC is an important tool for making a quick intra-operative preliminary diagnosis and taking real-time surgical and further management decisions. This study aimed to evaluate the diagnostic accuracy of SSC for chordoma cases. This retrospective study conducted in a North Indian tertiary care center enrolled chordoma cases histopathologically diagnosed between 01.01.2013 and 31.07.2023, for which SSC was also performed. SSC smears and their corresponding histopathology slides (±immunohistochemistry [IHC] slides) were retrieved. Histo-cytological correlation was performed. In total, 13 such cases were retrieved. The mean age was 34.4 + 5.6 years. The male-female ratio was 1:1.6. The most common location was the spheno-occipital region (10 cases), followed by sacro-coccygeal (two cases) and vertebral regions (1 case). The SSC was positive for chordoma in 10/13 cases. Thus, the calculated accuracy of SSC in chordoma diagnosis was 76.9%. A total of 3/13 (23.1%) cases where SSC was inconclusive for chordoma were difficult to diagnose cases, requiring IHC for ultimate diagnosis. Cytological features such as abundant myxoid matrix and physaliphorous cells help in correct diagnosis of chordoma on SSC. We found the diagnostic accuracy of SSC in chordoma diagnosis to be 76.9%. Features such as abundant myxoid matrix and physaliphorous cells are helpful in correct diagnosis on SSC. Thus, even though chordomas are rare, one should consider them among the differential diagnoses in cases presenting with appropriate clinico-radiological features and characteristic cytological findings.

Functional outcome predictors and recanalization in cerebral venous thrombosis: A single-center cross-sectional study.

Cerebral venous thrombosis (CVT) is a rare type of stroke. Functional outcome (FOC) in CVT can be affected by different factors, and recanalization is an important determinant. This study aimed to identify the FOC predictors including recanalization in patients with CVT. This retrospective study reviewed electronic charts of patients with CVT admitted to the King Fahd Hospital of the University, a teaching and referral hospital between January 2012 and March 2023. Demographic and other clinicoradiological characteristics were noted. Factors affecting FOC were investigated using the Chi-square test, odds ratios (ORs), and 95% confidence interval (CI). Out of 64 patients, 78% achieved good FOC. Age was significantly higher in patients having poor FOC as compared to those having good FOC (P ≤ 0.001). Women had more likelihood to be functionally independent as compared to men (OR = 1.35, 95% CI = 1.01-1.80, P = 0.02). Altered consciousness (OR = 2.94, 95% CI = 1.23-6.99, P = 0.01), venous hemorrhagic infarction (OR = 3.26, 95% CI = 1.36-7.82, P = 0.008), and nonrecanalization (OR = 1.44, 95% CI = 0.97-2.14, P = 0.02) were significantly associated with poor FOC. Hereditary thrombophilia (OR = 0.60, 95% CI = 0.31-1.12, P = 0.03) and infections (OR = 0.59, 95% CI = 0.31-1.12, P = 0.01) were associated with less likelihood of good FOC. Age ≥50 years (P = 0.01) and illness of more than 1-month duration (P = 0.01) were associated with nonrecanalization. Older age, male sex, presence of venous hemorrhagic infarction, and nonrecanalization can predict poor FOC in CVT. The recanalization process can be affected by late presentation, and the plausible reason could be a delay in therapeutic anticoagulation. Further prospective and multicenter studies are needed to determine the predictors of FOC and to understand the process of recanalization in CVT.

Pseudocysts of the Adrenal Gland: A Systematic Review of Existing Scientific Literature From 2000 to 2023.

Adrenal masses are abnormal growths in the adrenal gland, comprising entities such as pheochromocytomas, adrenal adenomas, adrenocortical carcinomas, and adrenal cysts. Pseudocysts are predominant among adrenal cysts. Due to its infrequent presentation, there are no specific guidelines present in the current literature to steer its management. In such circumstances, a systematic review of the existing literature is imperative to develop comprehensive insights and evidence-based protocols. We aimed to comprehensively analyze the clinico-radiological characteristics and management outcomesof adrenal gland pseudocysts. Human adrenal gland pseudocysts identified through imaging and histopathology, as retrieved from the PubMed search engine, were included in the study. Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) and the Joanna Briggs Institute (JBI) CriticalAppraisal Checklist were used to stratify searched studies published between 2000 and 2023. A total of 39 studies were finally included, of which 36 were case reports and three case series, containing 45 patients in total. Data for clinical, radiological, histopathological, and outcome variables were collected, and descriptive analysis was carried out. All cases presented were adults with a clear female predominance of 66.67%. About 26.67% presented with no palpable mass or clinical symptoms, while 28.89% presented with vague abdominal pain. The most prevalent computed tomography (CT) finding was a cystic lesion with calcification and/or hemorrhage and/or necrosis, occurring in 17.78% of cases. Following this, a cystic lesion with only calcification was observed in 13.33% of cases, and a well-defined cystic mass/lesion was found in 11.11% of cases. The most important indication for surgery was compression effect in 44.44%, increasing size in 20.00%, and suspicion of malignancyin another 20.00% of cases. About 64.44% underwent open surgery, while 35.55% underwent minimally invasive surgery. Most patients, 95.55% of the total, had an uneventful postoperative course without any complications. Adrenal gland pseudocyst, though rare and incidental, warrants consideration in differential diagnosis as it presents with vague symptomsand sometimes no symptoms at all. Our review of existing literature highlights the importance of surgical intervention for symptomatic or potentially malignant cysts, with en bloc adrenalectomy being the preferred approach.

Clinico-radiological features of optic nerve sheath schwannoma: Review and illustrative case.

The optic nerve sheath is a rare site for schwannoma, to our knowledge 19 optic nerve sheath schwannoma (ONSS) cases have been reported. Difficulty can arise in diagnosis as imaging findings can be relatively non-specific. We describe a case of ONSS that mimicked orbital cavernous venous malformation pre-operatively. A 43-year-old woman presented with right subacute visual loss, reduced vision to 6/48 and signs of optic neuropathy. Endocapsular excision of the mass, which was adherent to the optic nerve, was accomplished from an endoscopic endonasal approach utilizing a 5-hand technique of retrocaruncular dissection. Histology showed spindle-shaped tumour cells with S100 positivity, consistent with ONSS. At 6 months post-operatively vision had improved to 6/6. We show that an endoscopic endonasal approach, augmented by transcaruncular retraction, can be utilized to excise ONSS with an excellent outcome. We review published cases of ONSS, including demographic and clinical features, differential diagnosis based on radiological features, and described outcomes, which are generally poor.

Clinico-Radiological Features of Acute and Chronic Superior Mesenteric Artery Occlusion (SMAO)

Clinico-Radiological Features of Acute and Chronic Superior Mesenteric Artery Occlusion (SMAO)

Retrospective Outcome Analysis of Geriatric Traumatic Brain Injury Treated at a Tertiary Care Center in India

Abstract Background Trauma is a major cause of morbidity and mortality in elderly patients and its management is challenging. Outcome assessment in these patients is difficult because of preexisting chronic medical conditions as it may be impossible to isolate the effect of traumatic brain injury. This study aimed to examine the clinical outcomes and epidemiological and clinicoradiological characteristics of geriatric traumatic brain injury patients at a tertiary care center. Methods The clinical records of patients aged ≥60 years with head injuries treated at King George's Medical University between 2016 and 2020 were included in the study. Patients were followed up in the outpatient department or through telephone consultation. The follow-up period was updated using the Glasgow outcome score (GOS) of patients for current neurological status and relevant radiological investigations. Results The mean age of subjects was 66.16 ± 6.55 years. Road traffic accidents were the most frequent cause of brain injuries (448 [68.5%]). In total, 41% of the study patients had severe head injuries (Glasgow coma scale, GCS &lt; 9) at admission. The in-hospital mortality was 25.2%. In total, 60.7% of discharged patients showed favorable outcomes (GOS: 4 or 5). GCS at admission, best motor response, and associated comorbidity (diabetes mellitus) significantly predicted the outcome at 6 months. The majority of the patients (82.6 %) were 60 to 70 years of age. Conclusion Road traffic accidents are the most frequent cause of brain injuries in geriatrics. Most of them were managed medically, and majority were discharged (74.8%). Out of those discharged, 39.3% had unfavorable outcomes.

Early clinico-radiological outcomes following neuroendoscopic cysto-cisternostomy for middle cranial fossa arachnoid cysts: a prospective cohort study with illustrative cases.

The dysmorphogenetic arachnoid cysts' pathomechanism is most favoured, and about 50% occur as middle cranial fossa cysts (MCFAC). Still being rare, management options are yet evolving. We described the clinico-radiological features, management and early outcomes of participants with MCFAC in our service. This prospective cohort study involved 29 pediatric participants recruited (from electronic health records, using ICD G93.0 D016080 for arachnoid cysts) between 01/01/2023 and 31/06/2023, following informed consent according to the ethical approval. All participants had neuro-imaging confirmed MCFAC. Baseline and follow-up data were retrieved and analyzed using summary (mean, standard deviation) and inferential (ANOVA, t-test) statistics. They were averagely aged 6.2 ± 4.48years and were mostly males (89.7%). 24.1% were asymptomatic. The commonest symptoms (n = 38) were headaches (23.7%), developmental delays (15.8%), eye complaints (15.8%) and cephalomegaly (7.9%). They were predominantly left-sided (89.7%). Galassi (G) 3 lesions were less (24.1%), with G2 and G1 lesions evenly sharing the rest. The average cyst volume was 58.4 ± 80.83cm3; there were significant differences (F = 4.682; p = 0.018) between the average volumes for G1 (14.4 ± 22.42cm3), G2 (61.7 ± 89.92cm3) and G3 (122.5 ± 94.37cm3) lesions. 44.8% of the participants had rigid-endoscopic cysto-cisternotomy (all between the ICA and oculomotor nerve into the interpeduncular cistern, using ventriculostomy forceps); including all G3, 50% of G2 and no G1 (had serial clinico-radiological observation) lesion. The average pre- (117.42cm3) and post-operative (53.48cm3) cyst volumes showed significant (t = - 2.797, p = 0.021) reductions. Middle cranial fossa arachnoid cysts occur predominantly amongst males, in middle childhood and left-sided. The treatment-related patient series are largely symptomatic, unlike the largely asymptomatic, screening-related series. Higher Galassi grade lesions presented with progressively, significantly larger cyst volumes and higher likelihoods of surgery. The average post-operative cyst volume at follow-up averagely showed almost 60% reduction from the pre-operative. All participants reported clinical remission.

Atypical Spindle Cell/Pleomorphic Lipomatous Tumor: A Review and Update.

Atypical spindle cell/pleomorphic lipomatous tumor (ASCPLT) is a rare and recently described adipocytic neoplasm that primarily occurs in the subcutis of the limbs and limb girdles, particularly of middle-aged adults. It has locally recurrent potential if incompletely excised but no risk for distant metastasis. ASCPLT is histologically similar to spindle cell/pleomorphic lipoma and atypical lipomatous tumor and shows a mixture of atypical spindle cells, adipocytes, lipoblasts, floret-like multinucleated giant cells, and/or pleomorphic cells. It has been recently recognized that ASCPLT can undergo sarcomatous transformation. However, the biological significance of morphological sarcomatous transformation in ASCPLT remains uncertain. Immunohistochemically, the tumor cells show variable expression of CD34, S-100 protein, and desmin. Loss of nuclear Rb expression is observed in the majority of cases. ASCPLT lacks MDM2 gene amplification but can show RB1 gene deletion in a significant subset of cases. Complete surgical excision is the treatment of choice. This review provides an overview of the current knowledge on the clinicoradiological features, pathogenesis, histopathology, and treatment of ASCPLT. In addition, we will discuss the differential diagnosis of this new entity.

CT-based radiomics nomogram to predict proliferative hepatocellular carcinoma and explore the tumor microenvironment

BackgroundProliferative hepatocellular carcinomas (HCCs) is a class of aggressive tumors with poor prognosis. We aimed to construct a computed tomography (CT)-based radiomics nomogram to predict proliferative HCC, stratify clinical outcomes and explore the tumor microenvironment.MethodsPatients with pathologically diagnosed HCC following a hepatectomy were retrospectively collected from two medical centers. A CT-based radiomics nomogram incorporating radiomics model and clinicoradiological features to predict proliferative HCC was constructed using the training cohort (n = 184), and validated using an internal test cohort (n = 80) and an external test cohort (n = 89). The predictive performance of the nomogram for clinical outcomes was evaluated for HCC patients who underwent surgery (n = 201) or received transarterial chemoembolization (TACE, n = 104). RNA sequencing data and histological tissue slides from The Cancer Imaging Archive database were used to perform transcriptomics and pathomics analysis.ResultsThe areas under the receiver operating characteristic curve of the radiomics nomogram to predict proliferative HCC were 0.84, 0.87, and 0.85 in the training, internal test, and external test cohorts, respectively. The radiomics nomogram could stratify early recurrence-free survivals in the surgery outcome cohort (hazard ratio [HR] = 2.25; P < 0.001) and progression-free survivals in the TACE outcome cohort (HR = 2.21; P = 0.03). Transcriptomics and pathomics analysis indicated that the radiomics nomogram was associated with carbon metabolism, immune cells infiltration, TP53 mutation, and heterogeneity of tumor cells.ConclusionThe CT-based radiomics nomogram could predict proliferative HCC, stratify clinical outcomes, and measure a pro-tumor microenvironment.

Pulmonary metastases from pancreatic cancer have different clinico-radiological features compared with those from colorectal cancer.

Although pulmonary metastasectomy is a commonly-performed procedure, data are lacking on the feasibility and oncological efficacy of removal of pulmonary metastases from pancreatic cancer. In this study, we retrospectively compared features of pulmonary metastases from pancreatic cancer versus colorectal cancer (CRC, patients with CRC being common candidates for pulmonary metastasectomy) and outcomes of removing such metastases, with our aim being to identify specific features of the former. Data on removal of 182 pulmonary metastases (29 from pancreatic and 153 from CRC) performed from January 2013 to April 2024 were included in this analysis. Radio-pathological findings were compared between these groups. The study cohort comprised 139 pulmonary metastasectomies in 119 patients (24 with pancreatic cancer and 95 with CRC) in whom R0 resection was achieved and follow-up data were available. Atypical radiological findings of pulmonary metastases, including polygonal-shape (P<0.001), spiculae (P<0.001), air bronchogram (P=0.012), peripheral ground-glass opacities (P<0.001), and pleural tags (P<0.001) were present more frequently in metastases from pancreatic cancer than from CRC. Furthermore, pleural lavage cytology was more frequently positive in pulmonary metastases from pancreatic cancer than in those from CRC (P<0.001). Disease-free survival was significantly shorter after the removal of metastases from pancreatic than from CRC (P<0.001). Some pulmonary metastases from pancreatic cancer have atypical radiological features. Surgical interventions for these may enable diagnosis. The prognosis is significantly poorer after removing metastases from pancreatic cancer than from CRC. The therapeutic significance of our findings requires further investigation.

Non-infectious hypertrophic pachymeningitis associated with orbital inflammatory disease: a pooled analysis.

To describe four cases of non-infectious hypertrophic pachymeningitis (HP)-associated with orbital inflammatory disease (OID). This study summarises the clinico-radiological features, outcomes, and management of HP-associated OID. Retrospective case-series of patients with radiological evidence of HP and OID. Comprehensive literature review of all published English-language non-infectious causes of HP-associated OID. Reference lists were screened for inclusion of relevant articles. Thirty-seven cases of HP-associated OID (Mean age: 49.2 ± 17.4 years old; Male: 15) were identified, including four cases from our institution. Aetiologies included ANCA-associated vasculitis (12/37), non-specific/idiopathic (11/37), IgG4/multifocal fibrosclerosis (11/37), neurosarcoidosis (1/37), inflammatory myofibroblastic tumour (1/37), and giant cell arteritis (1/37). Orbital pain, headache, visual deterioration, and cranial nerve palsies were common clinical presentations. Both "focal" and "diffuse" HP were observed, with the most common sign of orbital involvement being an inflammatory orbital mass, typically with orbital apex involvement. Orbital myositis and dacryoadenitis were less common. The cavernous sinus was the most common site of extra-orbital inflammation. There was no single differentiating specific radiological feature between non-specific and specific forms of HP-associated OID. The clinico-radiological manifestations of HP-associated OID differ from those described in isolated HP or OID. There is no single specific radiological marker differentiating non-specific/idiopathic disease from secondary causes; however, the co-existence of HP in OID should prompt suspicion of an underlying cause. The disease may be refractory or resistant to initial treatment, although guidelines surrounding its management and the long-term prognosis remain to be determined.

Giant Cystic Pneumocytoma in a Young Male: Rare Diagnostic Conundrum with Clinicoradiological and Histopathological Features

AbstractPulmonary sclerosing pneumocytoma is a rare benign neoplasm typically seen in middle-aged women. The exact preoperative diagnosis is quite challenging considering its nonspecific clinical and radiologic features along with complex histology. Moreover, obtaining an exact histopathological diagnosis can be difficult especially with the small biopsy specimens. Most patients are generally asymptomatic with incidental detection of peripheral, homogenous, solitary pulmonary nodule. It is essential to differentiate it from other mimickers including malignant lesions as limited surgical resection is curative in these cases without adjuvant therapy. We present a rare giant cystic variant of pneumocytoma, in a young male, which was initially mimicking inflammatory myofibroblastic tumor even on preoperative histology.