The role of urology and radiology in prostate biopsy: current trends and future perspectives.

PURPOSE: Prostate biopsy is central to the accurate histological diagnosis of prostate cancer. In current practice, the biopsy procedure can be performed using a transrectal or transperineal route with different technologies available for targeting of lesions within the prostate. Historically, the biopsy procedure was performed solely by urologists, but with the advent of image-guided techniques, the involvement of radiologists in prostate biopsy has become more common. Herein, we discuss the pros, cons and future considerations regarding their ongoing role. METHODS: A narrative review regarding the current evidence was completed. PubMed and Cochrane central register of controlled trials were search until January 2024. All study types were of consideration if published after 2000 and an English language translation was available. RESULTS: There are no published studies that directly compare outcomes of prostate biopsy when performed by a urologist or radiologist. In all published studies regarding the learning curve for prostate biopsy, the procedure was performed by urologists. These studies suggest that the learning curve for prostate biopsy is between 10 and 50 cases to reach proficiency in terms of prostate cancer detection and complications. It is recognised that many urologists are poorly able to accurately interpret multi parametric (mp)-MRI of the prostate. Collaboration between the specialities is of importance with urology offering the advantage of being involved in prior and future care of the patient while radiology has the advantage of being able to expertly interpret preprocedure MRI. CONCLUSION: There is no evidence to suggest that prostate biopsy should be solely performed by a specific specialty. The most important factor remains knowledge of the relevant anatomy and sufficient volume of cases to develop and maintain skills.

Whole-Body MRI Screening for Carriers of Germline TP53 Mutations-A Systematic Review and Meta-Analysis.

PURPOSE: This systematic review evaluated whole-body MRI (WB-MRI) as a cancer screening tool for individuals carrying germline TP53 mutations, a population known to be at a significantly elevated risk of malignancy. The primary objective is to assess the diagnostic performance of WB-MRI in detecting cancer in this cohort. METHODS: PubMed, MEDLINE, EMBASE and the Cochrane Central Registry of Controlled Trials were searched until 18 August 2023. Eligible studies were selected based on predefined inclusion criteria. The data extracted included information on study characteristics, patient demographics, and the WB-MRI diagnostic performance. RESULTS: This systematic review identified eight eligible studies, comprising 506 TP53 mutation carriers. The mean age was 34.6 ± 16.3 (range 1-74) years. In total, 321/506 (63.4%) of the patients were female and 185/506 (36.6%) were male. In addition, 267/506 (52.8%) had a previous oncological diagnosis. Thirty-six new cancers were diagnosed with WB-MRI (36/506 (7.1%)). The overall pooled proportion of cancer detected on MRI was 7% (95% confidence interval 5-10). In total, 44 new lesions were picked up, as multiple lesions were found in some patients. CONCLUSION: WB-MRI is an effective cancer screening tool for TP53 mutation carriers. While these findings suggest the potential for WB-MRI to contribute to early cancer detection in this high-risk population, further research and the standardisation of protocols internationally are warranted to optimise its clinical utility.

Massive appendiceal mucinous neoplasm diagnosed after abdominal trauma: Pitfalls in imaging and diagnosis.

Low grade appendiceal mucinous neoplasm (LAMN) is a rare tumor presenting typically with symptoms of acute appendicitis. A 33-year-old gentleman presented with abdominal fullness and discomfort secondary to abdominal trauma obtained during boxing training. Investigations with magnetic resonance imaging (MRI), ultrasound, and colonoscopy revealed a large cystic lesion in the ascending colon mesentery with unclear continuation with the appendix. There were no obvious features of malignancy. Laparoscopy revealed a large, firm mass connected to the appendix with enlarged lymph nodes, and the patient underwent radical resection with a right hemicolectomy. Histopathology revealed complete excision of LAMN with no lymphatic involvement. Post traumatic intra-abdominal cystic lesions pose a diagnostic challenge, and neoplastic lesions cannot be ruled out with imaging alone, even with benign appearances. Careful surgical excision and histopathological diagnosis is the only definitive method of ruling-out malignancy.

Surgical prevalence and outcomes in ischemic colitis: A systematic review and meta-analysis.

BACKGROUND/AIM: This study reviews the literature to examine the proportion of patients requiring surgical management in ischemic colitis (IC) and identify surgical outcomes. METHOD: A systematic review of PubMed, EMBASE, and Cochrane Central Register of Controlled Trials was conducted in accordance with the latest Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) statement. English language studies and adult patients were included. Studies with fewer than 10 patients, and IC post aortic or cardiac surgery was excluded. We present our systematic review and meta-analysis with pooled proportions of right sided IC distribution and prevalence of surgical treatment. RESULTS: 23 studies with a total of 12,844 patients were included in the systematic review, with 19 studies and 12,420 patients included in the meta-analysis. Four studies were excluded from the meta-analysis due to only including specific cohorts of patients-two with cocaine induced colitis, one with phlebosclerotic colitis, and one with IC associated with acute myocardial infarction. The pooled proportion of right sided IC distribution was 15% (CI 14%-17%, p < 0.001), whilst the pooled proportion of surgical management of IC was 15% (CI 13%-16% p < 0.001). CONCLUSION: Prevalence of surgical management of IC is rare. Right sided IC is associated with higher mortality and higher rates of surgical management. Reporting of surgical outcomes is scant.

Membranous urethral length and urinary incontinence following robot-assisted radical prostatectomy: a systematic review and meta-analysis.

OBJECTIVE: To provide an update on the association between preoperative membranous urethral length (MUL) and postoperative urinary incontinence (UI) in men who undergo robot-assisted radical prostatectomy (RARP)/robot-assisted laparoscopic prostatectomy (RALP). MATERIALS AND METHODS: Urinary incontinence is common after RARP/RALP, and early recovery of continence is one of the most important functional outcomes following surgery. MUL has been identified as a factor associated with continence recovery after RARP/RALP. A systematic review was carried out according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, using PubMed, Embase, and Scopus databases. Inclusion criteria were English language full journal articles authored within the last 5 years that assessed continence using the Expanded Prostate Cancer Index Composite. The Critical Appraisal Skills Programme tool for retrospective cohort studies was used to evaluate study quality. A random-effects meta-analysis was performed to pool odds ratios (ORs) from available studies relating to continence as a function of MUL. The Grading of Recommendations, Assessment, Development and Evaluations framework was used to synthesise evidence. RESULTS: Six studies including 970 patients reported an association between MUL and continence at 12 months. Longer MUL was associated with reduced UI odds at 12 months after surgery (pooled OR 0.74, 95% confidence interval 0.68-0.87, P < 0.001). Significant methodological and statistical heterogeneity was encountered. CONCLUSIONS: Preoperative MUL measured on magnetic resonance imaging (MRI) is significantly associated with postoperative continence in men undergoing RARP/RALP. We recommend consideration of MRI measurement of MUL prior to RARP/RALP to guide treatment decisions in this population.

Surgical management of isolated caecal varices presenting with massive lower gastrointestinal haemorrhage: a case report and review of the literature.

Caecal varices are extremely rare with poorly defined management due to paucity of data. A 52-year-old man was diagnosed with a 3-day history of melena with a background of chronic liver disease and non-steroidal anti-inflammatory use. Investigations revealed anaemia with haemoglobin of 62 g/L, liver function derangement (Gamma-glutamyl transferase 251 U/L, alanine transaminase 40 U/L, bilirubin 84 umol/L, alkaline phosphatase 85 U/L), coagulopathy (International Normalized Ratio 1.6) and acute kidney injury (Creatinine 285 umol/L). Gastroscopy demonstrated no signs of upper gastrointestinal bleeding or portal hypertension. A large volume haematochezia occurred necessitating resuscitation with massive transfusion protocol, and colonoscopy was abandoned in favour of computerized tomography (CT) angiography, which revealed a large varix feeding the caecum. Urgent laparotomy and a right hemicolectomy was performed with application of abdominal vacuum dressing. The hemicolectomy sample was opened on back table demonstrating large caecal varix causing intraluminal bleeding. The patient was stabilized in intensive care, and a further laparotomy was performed 2 days later where an end ileostomy was formed. Caecal varices have been reported in literature with management via trans-jugular intrahepatic portosystemic shunt, endoscopically or conservatively with beta-blockade. Here we present, to the best of the author's knowledge, the first reported case of successful surgical management of caecal varices.

Pre- and post-treatment FDG PET-CT as a predictor of patient outcomes in anal squamous cell carcinoma: A systematic review and meta-analysis.

Anal squamous cell carcinoma (ASCC) has a generally acceptable outlook in terms of survival. 18-fluorodeoxyglucose-positron emission tomography/computer tomography (FDG PET-CT) is not recommended for routine monitoring post-ASCC treatment. We examine herein if FDG PET-CT has a use in the prognostic evaluation of patients with ASCC, what FDG PET-CT metrics are of value and if a pre- or post-chemo/radiotherapy scan is more prognostic of outcomes. PubMed, EMBASE and Cochrane Central Registry of Controlled Trials were comprehensively searched until 3 May, 2023. A modified Newcastle Ottawa scale was used to assess for study bias. We present our systematic review alongside pooled hazard ratios (HR) for maximum standardised uptake values (SUV) as a predictor of overall survival (OS) and progression-free survival (PFS). Seven studies including 523 patients were included in our systematic review. Current evidence suggests that SUV maximum and median, metabolic tumour volume, total lesion glycolysis and complete and partial metabolic response may be prognostic when considering overall or progression-free survival (OS)/(PFS) along with local recurrence (LR). Pooled HR from two included studies indicate SUV max is prognostic of OS, HR 1.179, CI (1.039-1.338), P = 0.011 and PFS 1.176, CI (1.076-1.285), P < 0.01. FDG PET-CT may have a role to play in the prognostic evaluation of ASCC patients. Current evidence suggests post-treatment scanning may hold superior prognostic value at this time.