RSS 1.0General Surgery
Recent Submissions
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Accuracy of intraoperative diagnosis of appendicitis in laparoscopy. Should this affect decision for appendicectomyPoster presentation abstract 942 from the Association of Surgeons in Training (ASiT) Annual Conference 6th-8th March 2020, Birmingham International Convention Centre.
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Comparative effectiveness of different cystic duct ligation techniques in laparoscopic cholecystectomy: a systematic review and network meta-analysis.Background: Laparoscopic cholecystectomy is one of the most common surgical procedures. Several techniques of ligating the cystic duct have been compared in randomized trials, but data on comparative effectiveness are missing. Our aim was to systematically review the literature and, if appropriate, synthesize the available evidence. Methods: A systematic search of PubMed, Scopus, Ovid, and Cochrane Library was conducted to identify randomized studies comparing different ligation techniques of the cystic duct in laparoscopic cholecystectomy. Network meta-analysis synthesized evidence from all available techniques. Techniques compared were metal (MC), absorbable (AC), or polymer clips (PC), suture ligation (SL), and ultrasonic shears (US). Results: Twenty-three randomized studies with 2851 patients were included in our study. A well-connected network was formed for bile leak and a star-shaped network for operative time, with MC as the common comparator. No difference was found when SL, AC, US, or PC were compared for bile leak. Operative time was statistically significantly reduced when US were compared to MC (mean difference [MD] = -14.32 [-19.37, -9.28]), SL MD = -20.16 (-10.84, -29.47), and AC MD = -18.32 (-1.25, -35.39). The remaining techniques had similar operative times. PC had the highest probability of being the best technique P = 41.8, and SL had the highest probability P = 46.1 of being the second best for bile leak. US had a 98.1% chance of being the best technique for operative time. Conclusions: Given that all techniques demonstrate similar efficacy, the decision should be based on cost, familiarity with the technique, and environmental factors.
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Bile duct injury during cholecystectomy: necessity to learn how to do and interpret intraoperative cholangiographyIntroduction: Biliary duct injury (BDI) is a serious complication during cholecystectomy. Perioperative cholangiography (POC) has recently been generating interest in order to prevent BDI. However, the current literature (including randomized controlled trials) cannot conclude whether POC is protective or not against the risk of BDI. The aim of our study was to investigate whether POC could demonstrate earlier BDI and which criteria are required to make that diagnosis. Methods: We performed a retrospective study between 2005 and 2018 in our French tertiary referral center, which included all patients who had presented following BDI during cholecystectomy. Results: Twenty-two patients were included. Nine patients had POC, whereas 13 did not. When executed, POC was interpreted as normal for three patients and abnormal for six. In this latter group, only two cases had a BDI diagnosed intraoperatively. In other cases, the interpretation was not adequate. Conclusion: BDIs are rare but may reduce patients' quality of life. Our study highlights the surgeon's responsibility to learn how to perform and interpret POC in order to diagnose and manage BDIs and potentially avoid catastrophic consequences.
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Robotic and laparoscopic minimally invasive surgery for colorectal cancer in Africa: an outcome comparison endorsed by the Nigerian society for colorectal disordersBackground: Minimally invasive surgery for colorectal cancer (CRC) offer superior outcomes compared to open surgery. This study aimed to review the robotic and laparoscopic procedures for CRC performed in Africa, and compare the mean surgery duration, blood loss, hospital stay, rate of conversion, and prevalence of morbidity and mortality. This is the first study to compare the outcomes of robotic and laparoscopic surgeries for CRC in Africa. Methods: A systematic review following the PRISMA guidelines was conducted. PubMed, Google Scholar, Web of Science, AJOL, EMBASE, and CENTRAL were searched, identifying 2,259 publications, 33 of which were deemed eligible. Statistical analysis of outcomes was performed using "R". Methodological quality of the included studies was assessed using the Cochrane ROBINS-I tool. Results: The minimally invasive approach has been applied for CRC treatment in seven African countries: Algeria, Cameroon, Egypt, Morocco, Nigeria, Senegal, and South Africa. Laparoscopic surgeries accounted for 1,485 (95%) of cases, while 71 (5%) were robotic. Robotic procedures were associated with a longer surgery duration (256.41 min vs. 190.45 min, p < 0.0001), higher blood loss (226.48 mL vs. 141.55 mL, p < 0.0001), and a shorter hospital stay (4.52 days vs. 6.06 days, p = 0.85). Robotic procedures had a lower rate of conversion (3% vs. 8%, p = 0.29) and a lower prevalence of morbidity (19% vs. 26%, p = 0.26). Wound infection (24.49%) and ileus (57.14%) were the most common complications following laparoscopic and robotic procedures, respectively. There was no mortality from robotic surgeries; however, a prevalence of 0.39% (95% CI: 0;1.19) was recorded from laparoscopy. Conclusions: This study establishes and compares the outcomes of advances in the treatment of CRC in the African setting, providing insights for policymakers, healthcare providers, and international organizations to make decisions regarding optimizing care for CRC patients in Africa.
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Robotic and laparoscopic right anterior sectionectomy and central hepatectomy: multicentre propensity score-matched analysisBoth robotic and laparoscopic right anterior sectionectomy and central hepatectomy can be performed safely in expert centres, with excellent outcomes. The robotic approach was associated with statistically significant less blood loss compared with laparoscopy, although the clinical relevance of this finding remains unclear.
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Risk factors for surgical site infection after groin hernia repair: does the mesh or technique matter?Introduction: Surgical site infections (SSIs) following groin hernia repair (GHR) are getting rarer in high income countries despite a wider use of meshes. Among the risk factors for SSIs, those related to the mesh and the surgical technique have rarely been described. Methods: A registry-based multicenter study using prospectively collected data, including SSIs and their potential risk factors, was conducted in the French Hernia-Club. Results: Between 2012 and 2019, 21,976 consecutive unselected adult patients aged 64.8 ± 15.4 years old (88.9% male) underwent GHR (83.5% unilateral). Fifty four percent were laparoscopic; 97.6% used mesh. The overall incidence of SSI was 0.26%. The incidence of SSI was respectively, 0.24% and 0.19% (p = 0.420) in open vs laparoscopic repairs; 0.19% and 0.25% (p = 0.638) for polyester vs polypropylene mesh; In adjusted multivariate analysis focusing on macroporous meshes (which were the most implanted meshes: 23,148 out of 24,099), there were no differences in terms of SSIs' rates regarding the technique: open versus laparoscopy (p = 0.762) nor the type of mesh used: polypropylene versus polyester (p = 0.557). Conclusion: The rate of SSI following GHR was low in this large registry study. Mesh type and surgical technique did not affect SSIs rates. Caution is advised when interpreting these data due to this very low rate of SSI and the potential for a type II error.
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Risk factors for anastomotic stricture after hepaticojejunostomy for bile duct injury - A systematic review and meta-analysisBackground: After major bile duct injury, hepaticojejunostomy can result in good long-term patency, but anastomotic stricture is a common cause of long-term morbidity. There is a need to assimilate high-level evidence to establish risk factors for development of anastomotic stricture after hepaticojejunostomy for bile duct injury. Methods: A systematic review of studies reporting the rate of anastomotic stricture after hepaticojejunostomy for bile duct injury was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Meta-analyses of proposed risk factors were then performed. Results: Meta-analysis included 5 factors (n = 2,155 patients, 17 studies). Concomitant vascular injury (odds ratio 4.96; 95% confidence interval 1.92-12.86; P = .001), postrepair bile leak (odds ratio: 8.03; 95% confidence interval 2.04-31.71; P = .003), and repair by nonspecialist surgeon (odds ratio 11.29; 95% confidence interval 5.21-24.47; P < .0001) increased the rate of anastomotic stricture of hepaticojejunostomy after bile duct injury. Level of injury according to the Strasberg Grade did not significantly affect the rate of anastomotic stricture (odds ratio: 0.97; 95% confidence interval 0.45-2.10; P = .93). Owing to heterogeneity of reporting, it was not possible to perform a meta-analysis for the impact of timing of repair on anastomotic stricture rate. Conclusion: The only modifiable risk factor, repair by a nonspecialist surgeon, demonstrates the importance of broad awareness of these data. Knowledge of these risk factors may permit risk stratification of follow-up, better informed consent, and understanding of prognosis.
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Recovery of surgical training through extended laparoscopic simulation trainingIntroduction: The coronavirus disease 2019 (COVID-19) pandemic has adversely affected surgical training internationally. Laparoscopic surgery has a steep learning curve necessitating repetitive procedural practice. We evaluate the efficacy of short- and long-duration simulation training on participant skill acquisition to support the recovery of surgical training. Methods: A prospective, observational study involving 18 novice medical students enrolled in a five-week course. Nodal timed assessments involved three tasks: hoop placement, stacking of sugar cubes and surgical cutting. One month post-completion, we compared the ability of six novice course participants to that of six surgical trainees who completed a smaller portion of the course curriculum. Results: Course participants (n=18) completed tasks 111% faster on their third and last course attempt. The surgical trainee group (n=6) took 46% longer to complete tasks compared to the six re-invited course participants, whose ability continued to advance on their fourth effort with a combined 154% earlier completion time compared to try one. Conclusions: This study supports the adoption of a structured, extended, regular and spaced-out simulation course or curriculum to cultivate greater skill acquisition and retention amongst surgical trainees, and improve patient care.
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Repairs Delphi: A UK and Ireland consensus statement on the management of infected arterial pseudoaneurysms secondary to groin injecting drug useObjective: Consensus guidelines on the optimal management of infected arterial pseudoaneurysms secondary to groin injecting drug use are lacking. This pathology is a problem in the UK and globally, yet operative management options remain contentious. This study was designed to establish consensus to promote better management of these patients, drawing on the expert experience of those in a location with a high prevalence of illicit drug use. Methods: A three round modified Delphi was undertaken, systematically surveying consultant vascular surgeons in the UK and Ireland using an online platform. Seventy five vascular surgery units were invited to participate, with one consultant providing the unit consensus practice. Round one responses were thematically analysed to generate statements for round two. These statements were evaluated by participants using a five point Likert scale. Consensus was achieved at a threshold of 70% or more agreement or disagreement. Those statements not reaching consensus were assessed and modified for round three. The results of the Delphi process constituted the consensus statement. Results: Round one received 64 (86%) responses, round two 59 (79%) responses, and round three 62 (83%) responses; 73 (97%) of 75 units contributed. Round two comprised 150 statements and round three 24 statements. Ninety one statements achieved consensus agreement and 15 consensus disagreement. The Delphi statements covered sequential management of these patients from diagnosis and imaging, antibiotics and microbiology, surgical approach, wound management, follow up, and additional considerations. Pre-operative imaging achieved consensus agreement (97%), with computed tomography angiography being the modality of choice (97%). Ligation and debridement without arterial reconstruction was the preferred approach at initial surgical intervention (89%). Multidisciplinary management, ensuring holistic care and access to substance use services, also gained consensus agreement. Conclusion: This comprehensive consensus statement provides a strong insight into the standard of care for these patients.
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The impact of postoperative radiological surveillance intensity on disease free and overall survival from primary retroperitoneal, abdominal and pelvic soft-tissue sarcoma.Aim: This observational study aimed to evaluate the impact of intensity of radiological surveillance on survival following resection of retroperitoneal sarcoma. Method: Retrospective cohort study of patients undergoing primary resection of soft tissue sarcoma arising in the retroperitoneum, abdomen or pelvis at a single, high-volume sarcoma centre. Intensity of follow-up regimes up to 5 postoperative years were categorized as 'European Society for Medical Oncology (ESMO) compliant' (intense), or 'non-ESMO compliant' (less-intense). The primary outcome measure was overall survival (OS). The secondary outcome measures were disease-free survival (DFS) and reoperation rate. Analyses were stratified by high (grade 2 or 3) or low (grade 1) tumour grade. Results: Of 168 patients, 67.1% had high-grade and 32.9% had low-grade disease. Overall, 40.0% of patients had ESMO-compliant radiological follow-up (high-grade:25.7%, low-grade:66.7%). 41.7% of patients died and 48.2% suffered local or distant recurrence by cessation of follow up. Upon univariable analysis for high-grade tumours, ESMO compliance reduced DFS (p = 0.066) but had no impact on OS. There was no significant difference in the reoperation rate in patients with ESMO-compliant and non-compliant follow-up (p = 0.097). In low-grade tumours, ESMO compliance significantly reduced DFS (p < 0.001), but without effecting OS. In risk-adjusted models for high-grade tumours, ESMO compliant follow-up was associated with reduced OS (HR:3.47, 1.40-8.61, p = 0.007) and no difference in DFS. In low-grade tumours, there was no association between overall ESMO compliance and OS or DFS. Conclusion: This study did not find a benefit for high-intensity radiological surveillance and overall survival in patients undergoing primary resection for high or low-grade retroperitoneal sarcoma.
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Analyzing the emergence of surgical robotics in Africa: a scoping review of pioneering procedures, platforms utilized, and outcome meta-analysis.Purpose: Surgical practice globally has undergone significant advancements with the advent of robotic systems. In Africa, a similar trend is emerging with the introduction of robots into various surgical specialties in certain countries. The need to review the robotic procedures performed, platforms utilized, and analyze outcomes such as conversion, morbidity, and mortality associated with robotic surgery in Africa, necessitated this study. This is the first study examining the status and outcomes of robotic surgery in Africa. Methods: A thorough scoping search was performed in PubMed, Google Scholar, Web of Science, and African Journals Online. Of the 1,266 studies identified, 16 studies across 3 countries met the inclusion criteria. A meta-analysis conducted using R statistical software estimated the pooled prevalences with the 95% confidence interval (CI) of conversion, morbidity, and mortality. Results: Surgical robots are reportedly in use in South Africa, Egypt, and Tunisia. Across four specialties, 1,328 procedures were performed using da Vinci (Intuitive Surgical), Versius (CMR Surgical), and Senhance (Asensus Surgical) surgical robotic platforms. Urological procedures (90.1%) were the major procedures performed, with robotic prostatectomy (49.3%) being the most common procedure. The pooled rate of conversion and prevalence of morbidity from the meta-analysis was 0.21% (95% CI, 0%-0.54%) and 21.15% (95% CI, 7.45%-34.85%), respectively. There was no reported case of mortality. Conclusion: The outcomes highlight successful implementation and the potential for wider adoption. Based on our findings, we advocate for multidisciplinary and multinational collaboration, investment in surgical training programs, and policy initiatives aimed at addressing barriers to the widespread adoption of robotic surgery in Africa.
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Surgical training during the COVID-19 pandemic at a designated 'cold' site: are we meeting the challenge?Introduction: There has been a marked reduction in surgical operative training opportunities during the COVID-19 pandemic. This may be improved by the establishment of 'cold' sites for NHS elective surgery. We investigated the training opportunities at a newly designated elective surgery cold site in the West Midlands, UK. Methods: An observational retrospective study was undertaken to include all gastrointestinal and urological elective surgery at a single 'cold' site during the first peak of the COVID-19 pandemic. Patient demographics, details of surgery and data relating to surgical training such as primary surgeon and portfolio index procedure were collected. Factors affecting the likelihood of trainees being the primary surgeon were analysed using logistic regression models. Results: There were 880 patients, with a median (interquartile range) age of 62 (48-74). Some 658 (74.8%) procedures were defined as 'index procedures' for specialty training year 4 (ST4) level: 409/509 (80.4%) for urology, 155/235 (66%) for colorectal and 94/136 (69.1%) for upper gastrointestinal (GI). Only 253/880 (28.8%) procedures were performed by a trainee as the primary surgeon: 201/509 (39.4%) for urology, 21/235 (8.9%) for colorectal and 31/136 (22.8%) for upper GI. The likelihood of a trainee being the primary surgeon was reduced for major surgery (p<0.001) and for GI surgery when compared with urology (p<0.001). Conclusions: Surgical training was facilitated at an elective surgery 'cold' site during the COVID-19 pandemic, but at lower levels than anticipated. Type of surgery influenced trainee participation. Surgical training should be incorporated into 'cold' site elective surgical services if trainees are to be prepared for the future.
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Biomechanical evaluation of an atraumatic polymer-assisted peripheral nerve repair system compared with conventional neurorrhaphy techniquesBackground: Microsuturing, the gold standard for peripheral nerve repair, can create tension and damage at the repair site, potentially impacting regeneration and causing neuroma formation. A sutureless and atraumatic polymer-assisted system was developed to address this challenge and support peripheral nerve repair. The system is based on a biocompatible and biodegradable biosynthetic polymer and consists of a coaptation chamber and a light-activated polymer for securing to the nerve. In this study, we compare the system's biomechanical performance and mechanism of action to microsutures and fibrin repairs. Methods: The system's fixation force was compared with microsutures and fibrin glue, and evaluated across various nerve diameters through tensile testing. Tension and tissue morphology at the repair site were assessed using finite element modeling and scanning electron microscopy. Results: The fixation force of the polymer-assisted repair was equivalent to microsutures and superior to fibrin glue. This force increased linearly with nerve diameter, highlighting the correlation between polymer surface contact area and performance. Finite element modeling analysis showed stress concentration at the repair site for microsuture repairs, whereas the polymer-assisted repair dissipated stress along the nerve, away from the repair site. Morphological analysis revealed nerve alignment with no tissue trauma for the polymer-assisted repair, unlike microsutures. Conclusions: The mechanical performance of the polymer-assisted coaptation system is suitable for peripheral nerve repair. The achieved fixation forces are equivalent to those of microsutures and superior to fibrin glue, minimizing stress concentration at the repair site and avoiding trauma to the severed nerve ends.
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The socioeconomic impact of surgical site infections.Précis: Surgical site infections are an ever-increasing phenomenon worldwide due to different factors. This brief report aimeds to highlight at a glance, for both physicians and political and institutional leaders, the economic burden of surgical site infections. Objectives: This brief report aimed to highlight the economic burden of surgical site infections (SSIs). Methods: A narrative review focusing on this subject has been carried out. Results: Surgical site infections are responsible for generating important costs. In 2017, a French cohort highlighted a mean cost of each SSI treatment to be around €1,814; the same year, the Centers for Disease Control and Prevention guidelines evaluated the mean cost caused by SSI treatment to be from $10,443 to $25,546 per SSI. This cost depends on many factors including the patient himself and the type of surgery. Conclusions: Prevention of the risk of infection is, therefore, a profitable concept for surgery that must be integrated within all healthcare managements worldwide.
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WSES/GAIS/SIS-E/WSIS/AAST global clinical pathways for patients with intra-abdominal infections.Intra-abdominal infections (IAIs) are common surgical emergencies and have been reported as major contributors to non-trauma deaths in hospitals worldwide. The cornerstones of effective treatment of IAIs include early recognition, adequate source control, appropriate antimicrobial therapy, and prompt physiologic stabilization using a critical care environment, combined with an optimal surgical approach. Together, the World Society of Emergency Surgery (WSES), the Global Alliance for Infections in Surgery (GAIS), the Surgical Infection Society-Europe (SIS-E), the World Surgical Infection Society (WSIS), and the American Association for the Surgery of Trauma (AAST) have jointly completed an international multi-society document in order to facilitate clinical management of patients with IAIs worldwide building evidence-based clinical pathways for the most common IAIs. An extensive non-systematic review was conducted using the PubMed and MEDLINE databases, limited to the English language. The resulting information was shared by an international task force from 46 countries with different clinical backgrounds. The aim of the document is to promote global standards of care in IAIs providing guidance to clinicians by describing reasonable approaches to the management of IAIs.
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WSES/GAIS/WSIS/SIS-E/AAST global clinical pathways for patients with skin and soft tissue infections.Skin and soft-tissue infections (SSTIs) encompass a variety of pathological conditions that involve the skin and underlying subcutaneous tissue, fascia, or muscle, ranging from simple superficial infections to severe necrotizing infections.Together, the World Society of Emergency Surgery, the Global Alliance for Infections in Surgery, the Surgical Infection Society-Europe, The World Surgical Infection Society, and the American Association for the Surgery of Trauma have jointly completed an international multi-society document to promote global standards of care in SSTIs guiding clinicians by describing reasonable approaches to the management of SSTIs.An extensive non-systematic review was conducted using the PubMed and MEDLINE databases, limited to the English language. The resulting evidence was shared by an international task force with different clinical backgrounds.
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Cardiac arrest centres for patients with non-traumatic cardiac arrest: a systematic review.Introduction: Regionalisation and organised pathways of care using specialist centre hospitals can improve outcomes for critically ill patients. Cardiac arrest centre hospitals (CAC) may optimise the delivery of post-resuscitation care. The International Liaison Committee on Resuscitation (ILCOR) has called for a review of the current evidence base. Aim: This systematic review aimed to assess the effect of cardiac arrest centres for patients with non-traumatic cardiac arrest. Methods: Articles were included if they met the prospectively registered (PROSPERO) inclusion criteria. These followed the PICOST framework for ILCOR systematic reviews. A strict definition for a CAC was used, reflecting current position statements and clinical practice. MEDLINE, Embase and the Cochrane Library were searched using pre-determined criteria from inception to 31 December 2023. Risk of bias was assessed using Cochrane's Risk of Bias tool and ROBINS-I. The certainty of evidence for each outcome was assessed using the GRADE approach. Substantial heterogeneity precluded meta-analysis and a narrative synthesis with visualisation of effect estimates in forest plots was performed. Results: Sixteen studies met eligibility criteria, including data on over 145,000 patients. One was a randomised controlled trial (RCT) at low risk of bias and the remainder were observational studies, all at moderate or serious risk of bias. All studies included adults with out-of-hospital cardiac arrest. One study used initial shockable rhythm as an inclusion criterion and most studies (n = 12) included patients regardless of prehospital ROSC status. Two studies, including the RCT, excluded patients with ST elevation. Survival to hospital discharge with a favourable neurological outcome was reported by 11 studies and favoured CAC care in all observational studies, but the RCT showed no difference. Survival to 30 days with a favourable neurological outcome was reported by two observational studies and favoured CAC care in both. Survival to hospital discharge was reported by 13 observational studies and generally favoured CAC care. Survival to 30 days was reported by two studies, where the observational study favoured CAC care, but the RCT showed no difference. Conclusion: This review supports a weak recommendation that adults with out-of-hospital cardiac arrest are cared for at CACs based on very low certainty of evidence. Randomised evidence has not confirmed the benefits of CACs found in observational studies, however this RCT was a single trial in a very specific setting and a population without ST elevation on post-ROSC ECG. The role of CACs in shockable and non-shockable subgroups, direct versus secondary transfer, as well as the impact of increased transport time and bypassing local hospitals remains unclear.
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Low preoperative serum albumin levels are associated with impaired outcome after cytoreductive surgery and perioperative intraperitoneal chemotherapy for peritoneal surface malignanciesPreoperative hypoalbuminemia is known to be associated with postoperative morbidity and mortality, as well as with poor survival after gastrointestinal cancer surgery. However, limited data exist regarding the prognostic significance of hypoalbuminemia in patients with peritoneal metastases undergoing cytoreductive surgery, combined with perioperative intraperitoneal chemotherapy. We performed a systematic literature review of the previously published studies addressing the potential association between preoperative albumin levels and overall surgical outcomes after the performance of cytoreductive surgery and perioperative intraperitoneal chemotherapy for peritoneal surface malignancies. Our research yielded a total of nine retrospective studies which met our inclusion criteria, and despite their heterogeneity; and we can conclude that preoperatively low albumin levels are associated with greater likelihood of overall and major morbidity, as well as less favorable oncological outcome after the performance of cytoreductive surgery and perioperative intraperitoneal chemotherapy.
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Strengths and limitations of registries in surgical oncology researchOver the past two decades, there has been a dramatic increase in studies based on large multi-institutional tumor registries. Applications of such databases span various research themes including epidemiology, oncology, surgical techniques, perioperative outcomes, and prognosis. Although these databases are acquired relatively easily, offer larger sample sizes and improved generalizability compared with institutional data, acknowledging limitations within analysis and cautious interpretation of data is important. Questionable conclusions can result when insufficient attention is paid to issues such as data quality and depth, potential sources of bias and missing data. This article reviews research themes and important limitations of these databases. The contemporary reporting of these issues in the literature and an increased awareness among surgical oncologists of potential applications and limitations will ensure that studies in the surgical oncology literature achieve high standards of methodological quality and clinical utility.
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Oligometastatic deposits of prostate cancer found within the sigmoid pericolic fat that was resected for colonic adenocarcinoma: a case reportBackground: Prostate cancer may rarely metastasize to the colon and colonic lymph nodes, and local treatment of oligometastatic deposits may improve oncological outcomes. Immunohistochemical stains are used to determine the most likely source of metastatic deposits when they are seen within surgical specimens. The aim of this case report is to illustrate how such techniques were used to identify unexpected prostatic metastases within the pericolic fat of a sigmoid colon resection specimen following elective curative surgery for colorectal cancer. To our knowledge, this is the first report of complete excision of oligometastatic deposits of prostate cancer found incidentally within the specimen of another cancer. Case report: An 89-year-old Caucasian man underwent sigmoid colectomy for an obstructing colorectal cancer in the sigmoid colon with some mesenteric lymphadenopathy. He had previously received radical radiotherapy for prostate cancer 10 years earlier. When the specimen was examined by the histopathologist, it was noted that the pericolic fat adjacent to the colorectal adenocarcinoma contained some metastatic deposits. Positive immunohistochemical staining for prostate-specific antigen and prostate-specific acid phosphatase with negative staining for CDX2 and CK20 revealed these to be prostatic metastases rather than colonic. Since these were completely excised, and there were no other metastases, this represented a serendipitous, curative excision of oligometastatic deposits of an additional cancer to the one that was being treated. Conclusions: This case illustrates how immunohistochemical staining may be used to distinguish the source of metastatic deposits based on the likelihood of primary tumor from a careful and thorough patient history.