Evaluation of artificial-intelligence-based liver segmentation and its application for longitudinal liver volume measurement

BACKGROUND

Accurate liver-volume measurements from CT scans are essential for treatment planning, particularly in liver resection cases, to avoid postoperative liver failure. However, manual segmentation is time-consuming and prone to variability. Advancements in artificial intelligence (AI), specifically convolutional neural networks, have enhanced liver segmentation accuracy. We aimed to identify optimal CT phases for AI-based liver volume estimation and apply the model to track liver volume changes over time. We also evaluated temporal changes in liver volume in participants without liver disease.

METHODS

In this retrospective, single-center study, we assessed the performance of an open-source AI-based liver segmentation model previously reported, using non-contrast and dynamic CT phases. The accuracy of the model was compared with that of expert radiologists. The Dice similarity coefficient (DSC) was calculated across various CT phases, including arterial, portal venous, and non-contrast, to validate the model. The model was then applied to a longitudinal study involving 39 patients without liver disease (527 CT scans) to examine age-related liver volume changes over 5 to 20 years.

RESULTS

The model demonstrated high accuracy across all phases compared to manual segmentation. Among the CT phases, the highest DSC of 0.988 ± 0.010 was in the arterial phase. The intraclass correlation coefficients for liver volume were also high, exceeding 0.9 for contrast-enhanced phases and 0.8 for non-contrast CT. In the longitudinal study, the model indicated an annual decrease of 0.95%.

CONCLUSION

This model provides high accuracy in liver segmentation across various CT phases and offers insights into age-related liver volume reduction. Measuring changes in liver volume may help with the early detection of diseases and the understanding of pathophysiology.

Endometrial cancer recurrence presenting as anterior abdominal wall necrotising fasciitis

Endometrial cancer is the second leading cause of malignancy in women worldwide. Risk of recurrence and treatment depends on tumour grade, stage and more recently, molecular classification. This case details an atypical presentation of endometrial cancer recurrence. A postmenopausal woman presented to hospital in septic shock with anterior abdominal wall necrotising fasciitis. She was 5 years into her surveillance for FIGO (International Federation of Gynaecology and Obstetrics) Grade III, Stage IIIA mixed endometrioid and clear cell endometrial adenocarcinoma, treated by total abdominal hysterectomy, bilateral salpingo-oophorectomy, vaginal brachytherapy, radiotherapy and chemotherapy. Necrotising fasciitis was localised to a fluid collection associated with biological mesh on the anterior abdominal wall. Histopathology and cytology of the fluid collection revealed high-grade serous endometrial carcinoma. Recurrence in the incision has previously been described in the literature, however not as a fluid collection in association with biological mesh nor causing necrotising fasciitis of the anterior abdominal wall.

Surgical Approaches to Resection of Olfactory Groove Meningiomas: Comparative Meta-analysis of the Endoscopic Endonasal versus Transcranial and Unilateral versus Bilateral Approaches

Introduction  Here we systematically review the extant literature to highlight the advantages of bilateral versus unilateral approaches and endoscopic endonasal (midline) approaches versus transcranial approaches for olfactory groove meningiomas, focusing on complications, extent of resection, and local recurrence rates. Methods  Three databases were queried to identify all primary prospective trials and retrospective series comparing outcomes following endoscopic endonasal versus transcranial approaches and unilateral versus bilateral craniotomy for surgical resection of olfactory groove meningiomas. All articles were screened by two independent authors and selected for formal analysis according to predefined inclusion/exclusion criteria. Results  Seven studies comprising 288 total patients (mean age 55.0 ± 24.6 years) met criteria for inclusion. In the three comparing the endoscopic endonasal ( n  = 21) versus transcranial ( n  = 32) approaches, there was no significant difference between the two with respect to gross total resection ( p  = 0.34) or rates of Simpson Grade 1 resection ( p  = 0.69). EEA demonstrated higher rates of overall complications ( p  < 0.01) including postoperative infection ( p  = 0.03). In the four studies comparing bilateral ( n  = 117) versus unilateral approaches ( n  = 118), overall complication rates ( p  < 0.01) and disease recurrence ( p  = 0.01) were higher with bilateral approaches. All surgery-related mortalities also occurred in the bilateral cohort ( n  = 7, 7.14%). Gross total resection ( p  = 0.63) and Simpson grade ( p  = 0.48) were comparable between approaches. Olfaction preservation was superior for unilateral approaches ( p  < 0.01). Conclusion  Though the literature is limited, current evidence suggests that the endoscopic endonasal approach may be favorable over conventional craniotomy for select olfactory groove meningioma patients. Where craniotomy is used, unilateral approaches appear to reduce complications and the risk of olfaction loss.

Evaluation of Liver Volume Estimation Methods in Living Donor Liver Transplant: CT Volumetry vs MeVis, With Comparison of Open and Laparoscopic Surgery

BACKGROUND

Accurately assessing graft volume is crucial for donor and recipient safety in living donor liver transplantation. This can be performed using manual computed tomography volumetry (CTvol) or semiautomated methods (MeVis). We aimed to compare CTvol and MeVis in estimating the actual graft weight during LDLT, and analyse any differences in weight between laparoscopic and open donor hepatectomy.

METHODS

A retrospective study of living donors between 2015 and 2022 with complete imaging data was performed. Graft weights were estimated using (1) CT volumetry and (2) semiautomated MeVis software. The primary outcome was graft weight variance ([Predicted weight-Actual weight]/Predicted weight) × 100. The secondary outcome of interest was whether open or laparoscopic surgery affected graft weight variance.

RESULTS

Of the 33 donors, 52.6% were right liver without middle hepatic vein grafts. Nineteen donors (57.6%) underwent open hepatectomy. Both CTvol (r = 0.70; P < .001) and MeVis (r = 0.85; P < .001) showed strong correlation with actual graft weight. Weight variance using CTvol was -2.9% vs -15.3% (P = .04) for open vs laparoscopic, while the corresponding using MeVis was -0.9% vs -8.5% (P = .11). Actual graft-to-recipient weight ratio predicted by MeVis was similar between open and laparoscopic approaches (-0.01 vs 0.07; P = .12).

CONCLUSIONS

Both CT volumetry and MeVis showed strong correlation between predicted and actual graft weights. Laparoscopic hepatectomy showed greater variability in graft weight estimation using CT volumetry, but MeVis was similar across both open and laparoscopic surgery.

Isolated muscle metastasis from early-stage endometrial carcinoma six years after diagnosis: A case report and literature review

INTRODUCTION AND IMPORTANCE

Endometrial cancer is the most common gynecological malignancy, typically diagnosed at an early stage with a favorable prognosis. However, certain subtypes and molecular characteristics can predispose patients to a higher risk of recurrence and metastasis. Understanding unusual metastatic patterns, such as isolated muscular metastases, is crucial for comprehensive management and treatment strategies in endometrial cancer.

CASE PRESENTATION

A 55-year-old woman with a previous diagnosis of grade 2 intra-mucosal endometrioid adenocarcinoma presented with a painful abdominal swelling. Imaging identified a parietal formation within the rectus abdominis muscle, initially suspected to be an endometriotic cyst. Subsequent surgical excision confirmed the presence of carcinomatous glands infiltrating the striated muscle tissue. After a complication-free surgery, the patient underwent adjuvant chemotherapy and is now being monitored for 10 months without any signs of recurrence.

CLINICAL DISCUSSION

The presented case underscores the rarity of muscular metastases in endometrial cancer, emphasizing the need for better understanding and awareness of unusual metastatic patterns. Detailed histological examination confirmed the secondary parietal muscular localization of the carcinoma, prompting further therapeutic management.

CONCLUSIONS

This case contributes to the existing literature by highlighting a unique presentation of metastatic endometrial cancer in the muscular tissue, shedding light on potential diagnostic challenges and treatment considerations. Enhanced awareness and knowledge of such atypical metastatic sites are crucial for improved patient care and outcomes.

Seroprevalence of Hepatitis A virus infections among schoolchildren in Amran Governorate, Yemen

Hepatitis A virus (HAV) is the predominant cause of acute viral hepatitis worldwide; however, data on HAV prevalence among schoolchildren are limited. This study aimed to investigate HAV seroprevalence among schoolchildren in Amran governorate. This is a cross-sectional study that was carried out among 299 students between October 2023 and July 2024. The blood specimens were collected, and the anti-HAV antibody was detected by an enzyme-linked immunosorbent assay (ELISA) technique. Of 299 students screened, the seropositivity rate for HAV was 4 (1.3%). A higher rate of HAV was detected among male students 3 (1.6%), in the age group of 5-8 years 1 (11.1%), and in those whose parents had a secondary certificate 2 (2.3%). Moreover, a higher seroprevalence of HAV was observed among students who drank untreated water (1.6%) and those with a history of hepatitis A infection (6.7%). Additionally, this result revealed that children whose families had a history of HAV infection had the highest risk factors for HAV infection (OR = 8.9667), and those whose family members had an HAV infection (OR = 1.9029). To combat the HAV requires the implementation of preventive measures aimed at improving hygiene and sanitation, advocating widespread vaccination, and a rapid response to outbreaks of the virus.

Prediction and management of small-for-size syndrome in living donor liver transplantation

Small-for-size syndrome (SFSS) remains a critical challenge in living donor liver transplantation (LDLT), characterized by graft insufficiency due to inadequate liver volume, leading to significant postoperative morbidity and mortality. As the global adoption of LDLT increases, the ability to predict and manage SFSS has become paramount in optimizing recipient outcomes. This review provides a comprehensive examination of the pathophysiology, risk factors, and strategies for managing SFSS across the pre-, intra-, and postoperative phases. The pathophysiology of SFSS has evolved from being solely volume-based to incorporating portal hemodynamics, now recognized as small-for-flow syndrome. Key risk factors include donor-related parameters like age and graft volume, recipient-related factors such as MELD score and portal hypertension, and intraoperative factors related to venous outflow and portal inflow modulation. Current strategies to mitigate SFSS include careful graft selection based on graft-to-recipient weight ratio and liver volumetry, surgical techniques to optimize portal hemodynamics, and novel interventions such as splenic artery ligation and hemiportocaval shunts. Pharmacological agents like somatostatin and terlipressin have also shown promise in modulating portal pressure. Advances in 3D imaging and artificial intelligence-based volumetry further aid in preoperative planning. This review emphasizes the importance of a multifaceted approach to prevent and manage SFSS, advocating for standardized definitions and grading systems. Through an integrated approach to surgical techniques, hemodynamic monitoring, and perioperative management, significant strides can be made in improving the outcomes of LDLT recipients. Further research is necessary to refine these strategies and expand the application of LDLT, especially in challenging cases involving small-for-size grafts.

A Focus Group Discussion Study Exploring General Surgery Trainees' Views on Evidence-Based Medicine Within Their Training Program in the United Kingdom

INTRODUCTION

Evidence-based Medicine (EBM) is fundamental to modern healthcare and its integration into postgraduate curricula is strongly advocated. Despite its relevance, incorporating EBM in postgraduate training, specifically in general surgery, is fraught with challenges. This study aims to explore the perceptions of general surgical trainees regarding EBM, focusing on the process of achieving competency, assessment and its associated challenges.

METHODS

Four semi-structured focus group discussions were conducted, involving participants with varying experience in general surgery. Sessions were audio-recorded, de-identified and transcribed verbatim to facilitate data analysis. Thematic analysis was employed to identify recurring patterns and themes within the dataset, ensuring rigor and reliability in the findings. Saturation was achieved when no new themes or codes emerged from the data.

RESULTS

Eighteen trainees at different levels of training, academic experience and from different regions of the UK took part. The discussions were thematically analysed. Four key themes were identified: "Knowledge and understanding of EBM," "Developing EBM competencies," "Assessment in EBM," and "Barriers for EBM." Thematic saturation was achieved by the fourth focus group.

CONCLUSION

This study provides insights into the landscape of EBM in general surgery in the United Kingdom. Trainees demonstrated knowledge and understanding of EBM and the process of achieving relevant competencies. EBM assessment was perceived to be part of their training. Nevertheless, systemic barriers and inherent challenges appear to hinder the development of EBM competencies within postgraduate general surgical training. Achieving this requires a participatory approach to engage stakeholders to further develop the existing competency-based curriculum.

Level of evidence in high impact surgical literature: the way forward

Evidence-based medicine stipulates that clinical decision-making should revolve around scientific evidence. The goal of the present study is to evaluate the methodological quality of surgical research recently published in JAMA Surgery, International Journal of Surgery, and British Journal of Surgery, the three surgical journals with the highest impact factor. An electronic search of the PUBMED database was performed to retrieve all articles published in the JAMA Surgery, International Journal of Surgery, and British Journal of Surgery in the year 2022. Three authors independently reviewed all retrieved articles and methodological designs of the publications were analyzed and rated using a modification of the Oxford Centre for Evidence-Based Medicine Levels of Evidence (Oxford Levels of Evidence scale). The initial search identified 1236 articles of which 809 were excluded after title and abstract screening. The remaining 427 underwent full text/methods read, of which 164 did not meet the inclusion/exclusion criteria. A total of 273 studies were included in the analysis. The average level of evidence was 2.5 ± 0.8 across all studies assessed. The majority of study designs were comprised of retrospective cohorts (n = 119), prospective cohorts (n = 47), systematic reviews of non RCTs (n = 39), and RCTs (n = 37). There was no significant difference in the average level of evidence between the top three journals (p = 0.50). Most clinical studies in the highest impact factor surgical journals are of level III evidence, consistent with earlier literature. However, our analysis demonstrates a relatively higher percentage of LOE I and II compared to what was previously published in the literature.

Successful Laparoscopy-Assisted Extirpation of Burkitt's Lymphoma Causing Intestinal Obstruction in a 17-Year-Old Boy

Background: Childhood extranodal B-cell non-Hodgkin's lymphomas are often caused by Burkitt's lymphoma (BL). Treatment usually involves intensive polychemotherapy, and recent prospective trials show significantly improved outcomes. Surgery primarily involves conducting biopsies; ablative interventions are not recommended. However, in cases of severe presentation, such as an acute abdomen, emergency surgery may be necessary. Methods: We present the case of a 17-year-old boy who underwent emergency surgery due to intestinal obstruction caused by a tumor mass. An exploratory laparoscopy was performed due to abdominal wall infiltrates, and a large intraabdominal mass was discovered in the ileocaecal region. The tumor and tumor infiltrates were successfully removed en bloc in a minimally invasive laparoscopy-assisted fashion. Results: The postoperative course was favorable, and chemotherapy was started. Histopathology confirmed the diagnosis of BL. Follow-up examinations, including a positron emission tomography (PET) scan, showed no tumor recurrence. More than two years later, the patient remains asymptomatic with negative PET scans. Conclusions: Laparoscopy-assisted removal can be useful for pediatric solid abdominal tumors with abdominal wall infiltrates that cause obstruction. Surgeons must assess indications and procedures based on imaging and findings during emergency interventions. The role of ablative MIS in pediatric BL is limited.

Management of Inflammatory Phlegmon in Appendicitis: Comparing the Role of Emergency vs. Interval Appendectomy at a Single Institution

Background Acute appendicitis remains a common surgical pathology, with the accepted standard of care being appendectomy. However, in cases of acute appendicitis complicated by an inflammatory phlegmon, a dilemma remains regarding the best management options. The aim of our study was to examine the outcomes for patients with an appendiceal phlegmon, comparing emergency appendectomy with those who had initial conservative management followed by subsequent interval appendectomy. Methods We performed a retrospective analysis of all patients diagnosed with acute appendicitis with inflammatory phlegmon (January 2012 to December 2022), looking into the outcomes of patients managed with emergency appendectomy versus conservative management and subsequent interval appendectomy. Results A total of 127 patients were included in our study: 85 (66.9%) underwent emergency appendectomy, and 42 (33.1%) underwent interval appendectomy. Patients who underwent emergency appendectomy had a significantly shorter duration of symptoms compared to those undergoing interval appendectomy (two vs. seven days). Furthermore, there was a higher likelihood of either a partial cecectomy or ileocolic/right hemicolectomy in those undergoing emergency appendectomy (p=0.021). However, there was no difference in 30-day morbidity or mortality. Conclusion This study highlights the challenges in managing appendiceal phlegmons. We propose that interval appendectomies should be considered for patients who present with extensive phlegmonous appendicitis and a prolonged duration of symptoms.

Idiopathic encapsulating peritoneal sclerosis presenting with abdominal mass

A man in his late 30s presented with a history of recurrent colicky abdominal pain, bilious vomiting and intermittent mass formation in the lower abdomen. The mass was mobile, non-tender and fluctuant, and appeared in the right iliac fossa during episodes of pain and disappeared once the pain subsided. Contrast-enhanced CT (CECT) scan revealed a thick membrane-like structure covering the clumped small bowel loops, suggestive of an abdominal cocoon. A midline laparotomy was carried out with extensive adhesiolysis, and a membrane incision was performed. The final histopathological diagnosis was primary encapsulating peritoneal sclerosis. Encapsulating peritoneal sclerosis of idiopathic origin is rare and typically presents as an acute or subacute intestinal obstruction. A CECT scan is the diagnostic modality of choice, with a thick peritoneal membrane covering the small bowel loops being the hallmark sign. Surgical intervention is the preferred treatment for idiopathic cases, while medical management may address secondary causes.

Porto-sinusoidal Vascular Disease: Classification and Clinical Relevance

Non-cirrhotic portal hypertension (NCPH) is a well-recognized clinico-pathological entity, which is associated with clinical signs and symptoms, imaging, and endoscopic features of portal hypertension (PHT), in absence of cirrhosis. In patients with NCPH without known risk factors of PHT or extrahepatic portal vein thrombosis, the condition is called idiopathic non-cirrhotic portal hypertension (INCPH). There are multiple infectious, immune related causes, systemic diseases, drug and toxin exposures, haematological disorders, and metabolic risk factors that have been associated with this INCPH. However, the causal pathogenesis is still unclear. The Vascular liver disorders interest group group recently proposed porto-sinusoidal vascular disease (PSVD) as a syndromic entity, which provides definite histopathological criteria for diagnosis of NCPH (table 1). The three classical histo-morphological lesions specific for PSVD include obliterative portal venopathy, nodular regenerative hyperplasia, and incomplete septal fibrosis. The PSVD definition includes patients with portal vein thrombosis, PVT, and even those without PHT, thus broadening the scope of diagnosis to include patients who may have presented early, prior to haemodynamic changes consistent with PHT. However, this new diagnosis has pros and cons. The cons include mandating invasive liver biopsy to assess the PSVD histological triad in all patients with NCPH, an erstwhile clinical diagnosis in Asian patients. In addition, the natural history of the subclinical forms of PSVD without PHT and linear progression to develop PHT is unknown yet. In this review, we discuss the diagnosis and treatment of INCPH/PSVD, fallacies and strengths of the old and new schema, pathobiology of this disease, and clinical correlates in an Asian context. Although formulation of standardised diagnostic criteria is useful for comparison of clinical cohorts with INCPH/PSVD, prospective clinical validation in global cohorts is necessary to avoid misclassification of vascular disorders of the liver.

Colonic non-hodgkin lymphoma presenting as splenomegaly splenocolic fistula in person living with HIV: A case report

Primary colonic lymphoma is an infrequent malignancy among other large bowel malignancies, and the risk of the spread of tumor cells through a spleno-colic fistula is a unique finding and hence noteworthy. We report a case of a 55-year-old man living with HIV on anti-retroviral treatment for 12 years, who presented to the emergency room with complaints of generalized weakness and left-sided abdominal discomfort. Further examination and evaluation revealed massive splenomegaly with a thickened splenic flexure of the colon and spleno-colic fistula. The diagnosis of lymphoma with spread was made following laparotomy and histopathological examination of the colon and spleen.

The efficacy of Aescin combined with MPFF for early control of bleeding from acute hemorrhoids, A randomized controlled trial

BACKGROUND

Hemorrhoidal disease, affecting over 20 % of the population, presents management challenges due to its multifaceted nature. While treatments like Micronized Purified Flavonoid Fraction (MPFF) show promise, Aescin's efficacy remains uncertain. This study assesses the combined effectiveness of Aescin with MPFF against MPFF alone in treating Grades 1 and 2 hemorrhoids, focusing on halting bleeding and reducing mass effect.

METHOD

This study recruited patients from the Division of Colorectal Surgery, Chiang Mai University. Patients were randomly assigned to receive MPFF alone or MPFF with Aescin. Outcomes included the duration until bleeding cessation and resolution of mass effect.

RESULTS

Of 120 patients randomized to each group, the combination therapy demonstrated superiority in halting bleeding (two days VS four days) and resolving mass effect (four days VS five days) compared to MPFF alone with statistically significant differences. Treatment failure rates were lower in the combination therapy group, with high patient satisfaction.

CONCLUSION

Combining Aescin with MPFF shows promise as a therapeutic approach for Grades 1 and 2 internal hemorrhoids, offering expedited relief from bleeding and mass effect. These findings suggest the need for further research to validate results in larger cohorts and optimize treatment strategies for hemorrhoidal disease.

Evaluation of Various Methods of Liver Measurement in Comparison to Volumetric Segmentation Based on Computed Tomography

Background: A reliable assessment of liver volume, necessary before transplantation, remains a challenge. Our work aimed to assess the differences in the evaluation and measurements of the liver between independent observers and compare different formulas calculating its volume in relation to volumetric segmentation. Methods: Eight researchers measured standard liver dimensions based on 105 abdominal computed tomography (CT) scans. Based on the results obtained, the volume of the liver was calculated using twelve different methods. An independent observer performed a volumetric segmentation of the livers based on the same CT examinations. Results: Significant differences were found between the formulas and in relation to volumetric segmentation, with the closest results obtained for the Heinemann et al. method. The measurements of individual observers differed significantly from one another. The observers also rated different numbers of livers as enlarged. Conclusions: Due to significant differences, despite its time-consuming nature, the use of volumetric liver segmentation in the daily assessment of liver volume seems to be the most accurate method.

Do we really apply evidence-based-recommendations to spine surgery? Results of an international survey

OBJECTIVE

This international survey investigated Evidence-Based Medicine (EBM) in spine surgery by measuring its acceptance among spine surgeons. It assessed their understanding of EBM and how they apply it in practice by analyzing responses to various clinical scenarios..

MATERIALS AND METHODS

Following the CHERRIES guidelines, an e-survey was distributed to multiple social media forums for neurosurgeons and orthopedic surgeons on Facebook, LinkedIn, and Telegram and circulated further through email via the authors' network. Three hundred participants from Africa, Asia, Europe, North America, and Oceania completed the survey.

RESULTS

Our study revealed that 67.7% (n = 203) of respondents used EBM in their practice, and 97.3% (n = 292) believed training in research methodology and EBM was necessary for the practice of spine surgery. Despite this endorsement of using EBM in spine surgery, we observed varied responses to how EBM is applied in practice based on example scenarios. The responders who had additional training tended to obey EBM guidelines more than those who had no additional training. Most surgeons responded as always or sometimes prescribing methylprednisolone to patients with acute spinal cord injury. Other significant differences were identified between geographical regions, training, practice settings, and other factors.

CONCLUSIONS

Most respondents used EBM in practice and believed training in research methodology and EBM is necessary for spine surgery; however, there were significant variations on how to use them per case. Thus, the appropriate application of EBM in clinical settings for spinal surgery must be further studied.

A Rare Presentation of Recurrent Malignant Peripheral Nerve Sheath Tumor with Glandular Differentiation-A Case Report

Malignant peripheral nerve sheath tumors (MPNST) are rare heterogeneous group of soft tissue neoplasms. In most cases, they originate within the pre-existing neurofibromatosis. The emergence of glandular structures in MPNST is curious and enigmatic. We report a case of recurrent MPNST with glandular differentiation arising in the background of neurofibroma in a 20-year-old lady. By immunohistochemistry, MPNST showed focal positive staining for S100 and negative staining for SOX10 while adjacent neurofibroma showed diffuse positivity for S100 and SOX10. The glandular tumor cells showed positive staining for CDX2, Cam5.2, CK19, and CK7 (focal), while negative for SOX10 and S100. MPNST with glandular differentiation is quite rare which may pose a diagnostic challenge. The glandular differentiation in MPNST should be excluded from the metastasis from second primary with the aid of clinical and radiological correlation.

Rare recurrence pattern after complete response to chemotherapy in a patient with rectal cancer: a case report

BACKGROUND

Colorectal cancer (CRC) often metastasizes to the liver, lungs, lymph nodes, and peritoneum but rarely to the bladder, small intestine, and skin. We here report the rare metastasis of anal cancer in the left bladder wall, followed by metastases to the small intestine and skin, after abdominoperineal resection and left lateral lymph node dissection with chemotherapy in a patient with clinician Stage IVa disease.

CASE PRESENTATION

A 66-year-old man presented with 1-month history of bloody stool and anal pain and diagnosed with clinical Stage IVa anal cancer with lymph node and liver metastases (cT3, N3 [#263L], M1a [H1]). Systemic chemotherapy led to clinical complete response (CR) for the liver metastasis and clinical near-CR for the primary tumor. Robot-assisted laparoscopic perineal rectal resection and left-sided lymph node dissection were performed. Computed tomography during 18-month postoperative follow-up identified a mass in the left bladder wall, which was biopsied with transurethral resection, was confirmed as recurrent anal cancer by histopathologic evaluation. After two cycles of systemic chemotherapy, partial resection of the small intestine was performed due to bowel obstruction not responding to conservative therapy. The histopathologic evaluation revealed lymphogenous invasion of the muscularis mucosa and subserosa of all sections. Ten months after the first surgery for bowel obstruction and two months before another surgery for obstruction of the small intestine, skin nodules extending from the lower abdomen to the thighs were observed. The histopathologic evaluation of the skin biopsy specimen collected at the time of surgery for small bowel obstructions led to the diagnosis of skin metastasis of anal cancer. Although panitumumab was administered after surgery, the patient died seven months after the diagnosis of skin metastasis.

CONCLUSIONS

This case illustrates the rare presentation of clinical Stage IVa anal cancer metastasizing to the bladder wall, small intestine, and skin several years after CR to chemotherapy.

Colosplenic Fistula Following Splenic Embolization in a Sickle Cell Disease Patient

This case report details a rare instance of a colosplenic fistula following splenic embolization in a patient with sickle cell disease. The patient, a 29-year-old female, presented with symptoms of left hypochondrial pain and fever. Imaging revealed a splenic abscess characterized by an air-fluid level. Intraoperative observations disclosed that the spleen was entirely replaced by an abscess cavity, with the presence of colosplenic fistulae. A splenectomy and colonic resection were performed. This report highlights a rare complication that occurred a long time after splenic embolization, underscoring the need for a high level of suspicion to prevent serious complications.

The role of preoperative transfusion in sickle cell disease, a systematic review and meta-analysis

This systematic review and meta-analysis aimed to provide guidance on preoperative blood transfusion strategies for patients with sickle cell disease (SCD). We included all randomized controlled and observational studies exploring the clinical outcomes of preoperative blood transfusion among patients with SCD compared to the conservative transfusion strategy until 14/09/2022. Sixteen studies involving 3486 participants were analysed. The findings revealed a significantly higher bleeding rate in patients who received preoperative transfusion than those who followed a conservative strategy (RR = 4.32, 95% CI 1.75-10.68, P = 0.002, I2 = 0%). However, the two strategies had no significant differences in other clinical outcomes, such as acute chest syndrome, painful crisis, fever, neurological complications, thrombosis, ICU admission, and mortality. It is important to note that all the included studies had a moderate risk of bias. Preoperative transfusion in SCD was associated with a higher bleeding risk but a similar risk in other outcomes compared to conservative strategies. Notably, the increased bleeding risk observed seldom had clinical significance. We recommend individualizing management strategies, considering the overall positive impact of transfusions in reducing complications. Further high-quality studies are needed to refine recommendations.

Colosplenic fistula diagnosis and management: a case series and review of literature

BACKGROUND

A colosplenic fistula (CsF) is an extremely rare complication. Its diagnosis and management remain poorly understood, owing to its infrequent incidence. Our objective was to systematically review the etiology, clinical features, diagnosis, management, and prognosis to help clinicians gain a better understanding of this unusual complication and provide aid if it is to be encountered.

METHODS

A systematic review of studies reporting CsF diagnosis in Ovid MEDLINE, Ovid EMBASE, Scopus, Web of Science, and Wiley Cochrane Library from 1946 to June 2022. Additionally, a retrospective review of four cases at our institution were included. Cases were evaluated for patient characteristics (age, sex, and comorbidities), CsF characteristics including causes, symptoms at presentation, diagnosis approach, management approach, pathology findings, intraoperative complications, postoperative complications, 30-day mortality, and prognosis were collected.

RESULTS

Thirty patients with CsFs were analyzed, including four cases at our institution and 26 single-case reports. Most of the patients were male (70%), with a median age of 56 years. The most common etiologies were colonic lymphoma (30%) and colorectal carcinoma (17%). Computed tomography (CT) was commonly used for diagnosis (90%). Approximately 87% of patients underwent a surgical intervention, most commonly segmental resection (81%) of the affected colon and splenectomy (77%). Nineteen patients were initially managed surgically, and 12 patients were initially managed nonoperatively. However, 11 of the nonoperative patients ultimately required surgery due to unresolved symptoms. The rate of postoperative complications was (17%). Symptoms resolved with surgical intervention in 25 (83%) patients. Only one patient (3%) had had postoperative mortality.

CONCLUSIONS

Our review of 30 cases worldwide is the largest in literature. CsFs are predominantly complications of neoplastic processes. CsF may be successfully and safely treated with splenectomy and resection of the affected colon, with a low rate of postoperative complications.

A trans-Canadian positive deviance seminar for paraesophageal hernia surgery: Reporting national postoperative outcomes and consensus recommendations

BACKGROUND

The incidence of adverse events (AEs) and length of stay (LOS) varies significantly following paraesophageal hernia surgery. We performed a Canadian multicenter positive deviance (PD) seminar to review individual center and national level data and establish holistic perioperative practice recommendations.

METHODS

A national virtual PD seminar was performed in October 2021. Recent best evidence focusing on AEs and LOS was presented. Subsequently, anonymized center-level AE and LOS data collected between 01/2017 and 01/2021 from a prospective, web-based database that tracks postoperative outcomes was presented. The top two performing centers with regards to these metrics were chosen and surgeons from these hospitals discussed elements of their treatment pathways that contributed to these outcomes. Consensus recommendations were then identified with participants independently rating their level of agreement.

RESULTS

Twenty-eight surgeons form 8 centers took part in the seminar across 5 Canadian provinces. Of the 680 included patients included, Clavien-Dindo grade I and II/III/IV/V complications occurred in 121/39/12/2 patients (17.8%/5.7%/1.8%/0.3%). Respiratory complications were the most common (effusion 12/680, 1.7% and pneumonia 9/680, 1.3%). Esophageal and gastric perforation occurred in 7 and 4/680, (1.0% and 0.6% respectively). Median LOS varied significantly between institutions (1 day, range 1-3 vs. 7 days, 3-8, p < 0.001). A strong level of agreement was achieved for 10/12 of the consensus statements generated.

CONCLUSION

PD seminars provide a supportive forum for centers to review best evidence and experience and generate recommendations based on expert opinion. Further research is ongoing to determine if this approach effectively accomplishes this objective.

The current application and evidence for robotic approach in abdominal surgery: A narrative literature review

The current application of robotic surgery is evolving at a high pace in the current years. The technical advantages enable several abdominal surgical procedures to be performed minimally invasive instead of open surgery. Furthermore, procedures previously performed successfully using standard laparoscopy are now performed with a robotic approach, with conflicting results. The present narrative review reports the current literature on the robotic surgical procedures typically performed in a typical Scandinavian surgical department: colorectal, hernia, hepato-biliary, and esophagogastric surgery.

Surgical management of sclerosing encapsulating peritonitis (SEP) secondary to tuberculosis: A case report and review of the literature

INTRODUCTION

Sclerosing encapsulating peritonitis (SEP), commonly known as abdominal cocoon syndrome (ACS), is considered one of the rare causes of bowel obstruction [1].

CASE PRESENTATION

In this article, we report the case of a 20-year-old male patient with a 6-month history of recurrent colicky right-sided upper abdominal pain accompanied by nausea, vomiting and bloating, which gradually increased in severity and frequency. The contrast-enhanced abdominal computed tomography suggested a small bowel obstruction with a differential diagnosis of SEP. Later exploratory laparotomy and histopathological examination confirmed the diagnosis of ACS. Intraoperative adhesiolysis was performed and the patient's symptoms resolved.

DISCUSSION

This syndrome is characterised by the formation of a fibrous-collagenous membrane that partially or completely engulfs the small intestine, less commonly the colon and other abdominal organs. SEP is most commonly associated with long-term peritoneal dialysis, although drugs, peritoneal infection and systemic inflammatory disorders have been implicated. Patients often present with symptoms of partial bowel obstruction, which is difficult to diagnose before laparotomy. Of the available investigations, contrast-enhanced CT of the abdomen is the most sensitive, showing a fibrous sac-like membrane covering the intestinal loops and the fluid collection. Definitive treatment includes excision and adhesiolysis.

CONCLUSION

This article presents a rare case and focuses on the management of this pathology with a review of the literature.

Predictive value of POSSUM scoring system for postoperative complications and mortality in elderly patients with colorectal cancer

BACKGROUND

The POSSUM scoring system, widely employed in assessing surgical risks, offers a simplified and objective approach for the prediction of complications and mortality in patient. Despite its effectiveness in various surgical fields, including orthopedics and cardiovascular surgery, yet its utilization in elderly patients undergoing colorectal cancer surgery is infrequent.

OBJECTIVE

To analyze the predictive value of POSSUM scoring system for postoperative complications and mortality in elderly with colorectal cancer.

METHODS

306 elderly colorectal cancer patients were grouped according to the complications and death within 30 days after surgery. Among them, 108 cases in complication group, 198 cases in non-complication group, 16 cases in death group and 290 cases in survival group. POSSUM scores of all subjects were obtained and its predictive value for postoperative complications and mortality of elderly was conducted by ROC curve.

RESULTS

No apparent difference were observed in complications and mortality among patients with different disease types, operation types and operation timing (P> 0.05). The R2 in complication group was higher than non-complication group (P< 0.05). The R1 in death group were higher than survival group (P< 0.05). The AUC of R2 for predicting postoperative complications was 0.955 with a sensitivity of 88.89% and a specificity of 94.44% and the AUC of R1 for evaluating postoperative mortality of elderly with colorectal cancer was 0.783 with a sensitivity of 56.25% and a specificity of 82.93%.

CONCLUSION

POSSUM score system has a certain predictive value for postoperative complications and mortality in elderly with colorectal cancer. However, the predicted mortality rate is higher than actual mortality rate.

Liver volumetric and anatomic assessment in living donor liver transplantation: The role of modern imaging and artificial intelligence

The shortage of deceased donor organs has prompted the development of alternative liver grafts for transplantation. Living-donor liver transplantation (LDLT) has emerged as a viable option, expanding the donor pool and enabling timely transplantation with favorable graft function and improved long-term outcomes. An accurate evaluation of the donor liver's volumetry (LV) and anatomical study is crucial to ensure adequate future liver remnant, graft volume and precise liver resection. Thus, ensuring donor safety and an appropriate graft-to-recipient weight ratio. Manual LV (MLV) using computed tomography has traditionally been considered the gold standard for assessing liver volume. However, the method has been limited by cost, subjectivity, and variability. Automated LV techniques employing advanced segmentation algorithms offer improved reproducibility, reduced variability, and enhanced efficiency compared to manual measurements. However, the accuracy of automated LV requires further investigation. The study provides a comprehensive review of traditional and emerging LV methods, including semi-automated image processing, automated LV techniques, and machine learning-based approaches. Additionally, the study discusses the respective strengths and weaknesses of each of the aforementioned techniques. The use of artificial intelligence (AI) technologies, including machine learning and deep learning, is expected to become a routine part of surgical planning in the near future. The implementation of AI is expected to enable faster and more accurate image study interpretations, improve workflow efficiency, and enhance the safety, speed, and cost-effectiveness of the procedures. Accurate preoperative assessment of the liver plays a crucial role in ensuring safe donor selection and improved outcomes in LDLT. MLV has inherent limitations that have led to the adoption of semi-automated and automated software solutions. Moreover, AI has tremendous potential for LV and segmentation; however, its widespread use is hindered by cost and availability. Therefore, the integration of multiple specialties is necessary to embrace technology and explore its possibilities, ranging from patient counseling to intraoperative decision-making through automation and AI.

Successful Endoscopic Closure of Esophageal Perforation in Boerhaave Syndrome Using the Over-the-Scope Clip

Boerhaave syndrome (BS) is a rare but potentially fatal condition. Although surgery is considered the standard treatment, endoscopic therapy has acquired an important role as a minimally invasive management approach. The authors describe 2 cases of middle-aged male patients, presenting with spontaneous esophageal perforation after severe straining and vomiting. In the first case, the patient presented with a bone impaction in the upper esophagus successfully removed by rigid esophagoscopy. After the procedure, a chest X-ray/cervicothoracic computerized tomography scan (CT) showed a left hydropneumothorax and pneumomediastinum with oral contrast leak at the lower esophagus. In the second case, the patient presented to the Emergency Department with severe chest pain after an episode of vomiting. The CT showed a massive pneumomediastinum, subcutaneous emphysema, and an oral contrast leak compatible with BS. The patient was initially submitted to surgical suture, but contrast extravasation persisted after 12 days. After multidisciplinary team discussion of both patients, an upper gastrointestinal endoscopy was performed, which revealed pericentimetric wall defects at the distal esophagus. These were successfully closed using an over-the-scope clip (OTSC). After at least a 9-month follow-up, patients have remained clinically well with no relapse. The authors highlight the severity of these clinical cases and the endoscopic option that proved to be decisive in addressing BS. The favorable outcomes suggest a role for the OTSC approach in closing spontaneous esophageal perforation both as first-line and as rescue therapy after a surgical failure.

The burden of the knowledge-to-action gap in acute appendicitis

BACKGROUND

The burden of emergency general surgery (EGS) is higher compared to elective surgery. Acute appendicitis (AA) is one of the most frequent diseases and its management is dictated by published international clinical practice guidelines (CPG). Adherence to CPG has been reported as heterogeneous. Barriers to clinical implementation were not studied. This study explored barriers to adherence to CPG and the clinico-economic impact of poor compliance.

METHODS

Data were extracted from the three-year data lock of the REsiDENT-1 registry, a prospective resident-led multicenter trial. We identified 7 items from CPG published from the European Association of Endoscopic Surgery (EAES) and the World Society of Emergency Surgery (WSES). We applied our classification proposal and used a five-point Likert scale (Ls) to assess laparoscopic appendectomy (LA) difficulty. Descriptive analyses were performed to explore compliance and group comparisons to assess the impact on outcomes and related costs. We ran logistic regressions to identify barriers and facilitators to implementation of CPG.

RESULTS

From 2019 to 2022, 653 LA were included from 24 centers. 69 residents performed and coordinated data collection. We identified low compliance with recommendations on peritoneal irrigation (PI) (25.73%), abdominal drains (AD) (34.68%), and antibiotic stewardship (34.17%). Poor compliance on PI and AD was associated to higher infectious complications in uncomplicated AA. Hospitalizations were significantly longer in non-compliance except for PI in uncomplicated AA, and costs significantly higher, exception made for antibiotic stewardship in complicated AA. The strongest barriers to CPG implementation were complicated AA and technically challenging LA for PI and AD. Longer operative times and the use of PI negatively affected antibiotic stewardship in uncomplicated AA. Compliance was higher in teaching hospitals and in emergency surgery units.

CONCLUSIONS

We confirmed low compliance with standardized items influenced by environmental factors and non-evidence-based practices in complex LA. Antibiotic stewardship is sub-optimal. Not following CPG may not influence clinical complications but has an impact in terms of logistics, costs and on the non-measurable magnitude of antibiotic resistance. Structured educational interventions and institutional bundles are required.

Artificial Intelligence for Improved Hepatosplenomegaly Diagnosis

Hepatosplenomegaly is commonly diagnosed by radiologists based on single dimension measurements and heuristic cut-offs. Volumetric measurements may be more accurate for diagnosing organ enlargement. Artificial intelligence techniques may be able to automatically calculate liver and spleen volume and facilitate more accurate diagnosis. After IRB approval, 2 convolutional neural networks (CNN) were developed to automatically segment the liver and spleen on a training dataset comprised of 500 single-phase, contrast-enhanced CT abdomen and pelvis examinations. A separate dataset of ten thousand sequential examinations at a single institution was segmented with these CNNs. Performance was evaluated on a 1% subset and compared with manual segmentations using Sorensen-Dice coefficients and Pearson correlation coefficients. Radiologist reports were reviewed for diagnosis of hepatomegaly and splenomegaly and compared with calculated volumes. Abnormal enlargement was defined as greater than 2 standard deviations above the mean. Median Dice coefficients for liver and spleen segmentation were 0.988 and 0.981, respectively. Pearson correlation coefficients of CNN-derived estimates of organ volume against the gold-standard manual annotation were 0.999 for the liver and spleen (P < 0.001). Average liver volume was 1556.8 ± 498.7 cc and average spleen volume was 194.6 ± 123.0 cc. There were significant differences in average liver and spleen volumes between male and female patients. Thus, the volume thresholds for ground-truth determination of hepatomegaly and splenomegaly were determined separately for each sex. Radiologist classification of hepatomegaly was 65% sensitive, 91% specific, with a positive predictive value (PPV) of 23% and an negative predictive value (NPV) of 98%. Radiologist classification of splenomegaly was 68% sensitive, 97% specific, with a positive predictive value (PPV) of 50% and a negative predictive value (NPV) of 99%. Convolutional neural networks can accurately segment the liver and spleen and may be helpful to improve radiologist accuracy in the diagnosis of hepatomegaly and splenomegaly.

Terminal Ileum Lipoma Causing Ileocolic Intussusception: A Case Report and Literature Review

Adult intussusception is much rarer than pediatric intussusception and usually occurs secondary to a pathological lead point, most frequently neoplasm. Terminal ileum lipomas are an infrequent cause of adult ileocolic intussusception but can be seen together with the intussusception on initial imaging evaluation, which can guide appropriate diagnosis and management. We describe a case of a 42-year-old man presenting with 12 hours of severe right lower quadrant pain. CT of the abdomen and pelvis demonstrated an ileocolic intussusception with fat-density lesions within the intussusception as well as in the distal ileum. The patient went to the operating room for laparoscopic ileocolic resection, during which ileo-ileal and ileocolic intussusceptions were identified in the terminal ileum and multiple fatty masses were palpated in the terminal ileum and cecum. Following ileocecectomy, surgical pathology confirmed terminal ileum with intussusception associated with multiple submucosal lipomas. We also review the literature for cases of ileocolic intussusception caused by terminal ileum lipomas. Patients presented with both acute and chronic symptoms, and while CT was the most common modality used for diagnosis, ultrasound and colonoscopy were also able to identify the intussusception. Although the intussusception was initially reduced in two patients, all patients ultimately underwent surgical resection.

Evidence-Based Surgery: What Can Intra-Operative Images Contribute?

Evidence-based medicine integrates results from randomized controlled trials (RCTs) and meta-analyses, combining the best external evidence with individual clinical expertise and patients' preferences. However, RCTs of surgery differ from those of medicine in that surgical performance is often assumed to be consistent. Yet, evaluating whether each surgery is performed to the same standard is quite challenging. As a primary issue, the novelty of this review is to emphasize-with a focus on orthopedic trauma-the advantage of having complete intra-operative image documentation, allowing the direct evaluation of the quality of the intra-operative technical performance. The absence of complete intra-operative image documentation leads to the inhomogeneity of case series, yielding inconsistent results due to the impossibility of a secondary analysis. Thus, comparisons and the reproduction of studies are difficult. Access to complete intra-operative image data in surgical RCTs allows not only secondary analysis but also comparisons with similar cases. Such complete data can be included in electronic papers. Offering these data to peers-in an accessible link-when presenting papers facilitates the selection process and improves publications for readers. Additionally, having access to the full set of image data for all presented cases serves as a rich resource for learning. It enables the reader to sift through the information and pinpoint the details that are most relevant to their individual needs, allowing them to potentially incorporate this knowledge into daily practice. A broad use of the concept of complete intra-operative image documentation is pivotal for bridging the gap between clinical research findings and real-world applications. Enhancing the quality of surgical RCTs would facilitate the equalization of evidence acquisition in both internal medicine and surgery. Joint effort by surgeons, scientific societies, publishers, and healthcare authorities is needed to support the ideas, implement economic requirements, and overcome the mental obstacles to its realization.

Post Living Donor Liver Transplantation Small-for-size Syndrome: Definitions, Timelines, Biochemical, and Clinical Factors for Diagnosis: Guidelines From the ILTS-iLDLT-LTSI Consensus Conference

BACKGROUND

When a partial liver graft is unable to meet the demands of the recipient, a clinical phenomenon, small-for-size syndrome (SFSS), may ensue. Clear definition, diagnosis, and management are needed to optimize transplant outcomes.

METHODS

A Consensus Scientific committee (106 members from 21 countries) performed an extensive literature review on specific aspects of SFSS, recommendations underwent blinded review by an independent panel, and discussion/voting on the recommendations occurred at the Consensus Conference.

RESULTS

The ideal graft-to-recipient weight ratio of ≥0.8% (or graft volume standard liver volume ratio of ≥40%) is recommended. It is also recommended to measure portal pressure or portal blood flow during living donor liver transplantation and maintain a postreperfusion portal pressure of <15 mm Hg and/or portal blood flow of <250 mL/min/100 g graft weight to optimize outcomes. The typical time point to diagnose SFSS is the postoperative day 7 to facilitate treatment and intervention. An objective 3-grade stratification of severity for protocolized management of SFSS is proposed.

CONCLUSIONS

The proposed grading system based on clinical and biochemical factors will help clinicians in the early identification of patients at risk of developing SFSS and institute timely therapeutic measures. The validity of this newly created grading system should be evaluated in future prospective studies.

The effect of hepatic steatosis on liver volume determined by proton density fat fraction and deep learning-measured liver volume

OBJECTIVES

We aimed to evaluate the effect of hepatic steatosis (HS) on liver volume and to develop a formula to estimate lean liver volume correcting the HS effect.

METHODS

This retrospective study included healthy adult liver donors who underwent gadoxetic acid-enhanced MRI and proton density fat fraction (PDFF) measurement from 2015 to 2019. The degree of HS was graded at 5% PDFF intervals from grade 0 (no HS; PDFF < 5.5%). Liver volume was measured with hepatobiliary phase MRI using deep learning algorithm, and standard liver volume (SLV) was calculated as the reference lean liver volume. The association between liver volume and SLV ratio with PDFF grades was evaluated using Spearman's correlation (ρ). The effect of PDFF grades on liver volume was evaluated using the multivariable linear regression model.

RESULTS

The study population included 1038 donors (mean age, 31 ± 9 years; 689 men). Mean liver volume to SLV ratio increased according to PDFF grades (ρ = 0.234, p < 0.001). The multivariable analysis indicated that SLV (β = 1.004, p < 0.001) and PDFF grade*SLV (β = 0.044, p < 0.001) independently affected liver volume, suggesting a 4.4% increase in liver volume per one-point increment in the PDFF grade. PDFF-adjusted lean liver volume was estimated using the formula, liver volume/[1.004 + 0.044 × PDFF grade]. The mean estimated lean liver volume to SLV ratio approximated to one for all PDFF grades, with no significant association with PDFF grades (p = 0.851).

CONCLUSION

HS increases liver volume. The formula to estimate lean liver volume may be useful to adjust for the effect of HS on liver volume.

KEY POINTS

• Hepatic steatosis increases liver volume. • The presented formula to estimate lean liver volume using MRI-measured proton density fat fraction and liver volume may be useful to adjust for the effect of hepatic steatosis on measured liver volume.

Visualization of the recurrent laryngeal nerve alone versus intraoperative nerve monitoring in primary thyroidectomy: a framework approach to a missing typology

INTRODUCTION

Surgical studies evaluating a device or technology in comparison to an established surgical technique should accurately report all the important components of the surgical technique in order to reduce the risk of intervention bias. In the debate of visualization of the recurrent laryngeal nerve alone (VONA) versus intraoperative nerve monitoring (IONM) during thyroidectomy, surgical technique plays a key role in both strategies. Our aim was to investigate whether the surgical technique was considered as a risk of intervention bias by relevant meta-analyses and reviews and if steps of surgical intervention were described in their included studies.

METHODS

We searched PUBMED, CENTRAL-Cochrane library, PROSPERO and GOOGLE for reviews and meta-analyses focusing on the comparison of IONM to VONA in primary open thyroidectomy. Τhen, primary studies were extracted from their reference lists. We developed a typology for surgical technique applied in primary studies and a framework approach for the evaluation of this typology by the meta-analyses and reviews.

RESULTS

Twelve meta-analyses, one review (388,252 nerves at risk), and 84 primary studies (128,720 patients) were included. Five meta-analyses considered the absence of typology regarding the surgical technique as a source of intervention bias; 48 primary studies (57.14%) provided information about at least one item of the typology components and only 1 for all of them.

DISCUSSION

Surgical technique of thyroidectomy in terms of a typology is underreported in studies and undervalued by meta-analyses comparing VONA to IONM. This missing typology should be reconsidered in the comparative evaluation of these two strategies.

A unique case of complete tubular colonic duplication with normal anus accompanied by vestibular fistula in a 12 years _ old _ girl - A case report

INTRODUCTION AND IMPORTANCE

Duplication of the digestive system is one of the rare cases, which can vary in shape and size and is cystic in 80 % of cases. Most cases of duplication are often diagnosed before the age of two years. There are many ways to make the diagnosis, with computed tomography being the best, and duplication is often diagnosed during surgery.

CASE PRESENTATION

We present the case of a child suffering from complete duplication of colon with normal anus, accompanied by vestibular fistula with double urethra and vagina. The diagnosis was made at our hospital, the necessary surgery was performed, and a future plan for the child's condition was developed. CLINICAL DISCUSSION: a colonic duplication may be associated with malformations of other organs, and sometimes it may be associated with a vestibular or vaginal fistula. Therefore, we must evaluate patients for other anomalies when diagnosing a duplication. The most appropriate diagnostic method is CT, and surgery is recommended in symptomatic or asymptomatic patients.

CONCLUSION

When keeping in mind the possibility of a duplication of the digestive system, the surgeon helps to plan the surgery well, in addition to the importance of informing the parents of the possibility of eradication.

A Rare Case of Anterograde Gastroduodenal Intussusception Caused by Migrated Percutaneous Endoscopic Gastrostomy Feeding Tube

Gastroduodenal intussusception is a critical condition in which stomach protrudes into the duodenum. It is a very rare condition in adults. Most common causes include intra luminal lesions in the stomach including benign or malignant tumors of the stomach. Most common tumors included are gastrointestinal stromal tumors (GISTs), gastric carcinoma, gastric lipoma, gastric leiomyoma, and gastric schwannoma. It is extremely rare to be caused by migration of percutaneous feeding tube. A 50-year-old woman with a past medical history (PMH) of dysphagia status post percutaneous endoscopic gastrostomy (PEG) tube, history of spastic quadriplegia, presented with acute nausea, vomiting and abdominal distention, and was found to have gastroduodenal intussusception in computed tomography (CT) scan. Condition resolved after retracting PEG tube. Endoscopy did not reveal any intra luminal lesions. External fixation using Avanos Saf-T-Pexy T-fasteners was performed to prevent recurrence of this condition. Most common of causes of gastroduodenal intussusception are GIST tumors of stomach. CT abdomen is the most accurate test and upper endoscopy is needed to rule out any intra luminal causes. Treatment of choice is either endoscopic or surgical resection. External fixation is essential to prevent recurrence.

An incidental intra-operative finding of sclerosing encapsulating peritonitis, "abdominal cocoon" in an emergency presentation of small bowel obstruction, a case report

INTRODUCTION AND IMPORTANCE

Sclerosing encapsulating peritonitis (SEP) is a disease characterized by a chronic inflammatory process in which the small intestines are encased by a dense fibrocollagenous membrane. In this article, we report a 57 year old male who presented with bowel obstruction secondary to sclerosing encapsulating peritonitis with an initial imaging suggesting internal hernia.

CASE PRESENTATION

A 57-year-old male, who presented to the emergency department at our center with a chronic persistent nausea and vomiting, associated with anorexia, constipation and weight loss, CT scan showed a transition zone seen at the duodeno-jejunal (DJ) junction and findings suggesting internal hernia, he was treated conservatively initially followed by a diagnostic laparoscopy that was converted to open with intraoperative findings of intra-abdominal cocoon rather than an internal hernia, managed with adhesolysis and discharged home in stable good condition.

CLINICAL DISCUSSION

There are multiple factors that could attribute to PSEP including cytokines, fibroblasts, and angiogenic factors, such patients might be asymptomatic or presenting with GI obstruction symptoms. The diagnosis of PSEP varying from abdominal x rays to contrast enhanced CT scan.

CONCLUSION

The management of PSEP depends on the presentation and should be individualized, weather conservative medical or surgical approach can be used.

Desmoid Tumor Mimicking Port Site Metastasis after Laparoscopic Surgery for Endometrial Cancer

Desmoid tumors are rare; however, they sometimes form in the abdominal wall after surgery or trauma. We report a case of desmoid tumors in the abdominal wall mimicking port-site metastasis after laparoscopic surgery for endometrial cancer. A 53-year-old woman with familial adenomatous polyposis presented to our hospital with vaginal bleeding and was diagnosed with endometrial cancer. We performed a total laparoscopic hysterectomy and began observation. Two years after surgery, follow-up computed tomography revealed three nodules with a size of approximately 15 mm in the abdominal wall at the trocar sites. Tumorectomy was performed because endometrial cancer recurrence was suspected, but desmoid fibromatosis was finally diagnosed. This is the first report of desmoid tumors at the trocar site after laparoscopic surgery for uterine endometrial cancer. Gynecologists should be aware of this disease because differentiating it from metastatic recurrence is challenging.

Management of Enteroatmospheric Fistula (EAF) Using a Fistula-Vacuum Assisted Closure (VAC) in a Complicated Abdominal Trauma Case

Enteroatmospheric fistula (EAF) is a relatively rare complication of patients undergoing open abdomen (OA) for damage control surgery. Mortality rates are high due to the increased risk of peritonitis, intraabdominal abscess, sepsis, and new perforations. There are a wide range of EAF management therapies in the literature, however, there are limited options on cases involving fistula-vaccum assisted closure (VAC) therapy. This case describes the treatment course of a 57-year-old, male admitted for blunt abdominal trauma secondary to a motor vehicle accident. Upon admission the patient underwent damage control surgery. The surgeons elected to have the patient's abdomen open, applying a mesh to promote healing. After several weeks of hospitalization an EAF was discovered in the abdominal wound subsequently managed by utilizing a fistula-VAC technique. Based on the successful outcome of this patient, fistula-VAC was shown as an effective way to promote wound healing while reducing the chances of complications.

Assessing the Change in Operative Treatment Rates for Acute Midshaft Clavicle Fractures: Incorporation of Evidence-Based Surgery Results in Orthopaedic Practice

In 2007, a randomized controlled trial (RCT) by the Canadian Orthopaedic Trauma Society (COTS) demonstrated better functional outcomes and a lower proportion of patients who developed malunion or nonunion following operative, compared with nonoperative, treatment of midshaft clavicle fractures. The primary aim of the present study was to compare the proportion of midshaft clavicle fractures treated operatively prior to and following the publication of the COTS RCT. An additional exploratory aim was to assess whether the proportion of midshaft clavicle fractures that were treated with surgery for malunion or nonunion decreased.

Methods

This retrospective cohort analysis used population-level administrative health data on the residents of British Columbia, Canada. Cases were identified by International Classification of Diseases, Ninth Revision (ICD-9) diagnostic codes and procedure fee codes. Adult patients (≥18 years) with closed middle-third clavicle fractures between 1997 and 2018 were included. Multivariable logistic regression modeling compared the proportion of clavicle fractures treated operatively before and after January 1, 2007, controlling for patient factors. The Pearson chi-square test compared the proportion of fractures treated operatively for malunion or nonunion in the cohorts.

Results

A total of 52,916 patients were included (mean age, 47.5 years; 65.6% male). More clavicle fractures were treated operatively from 2007 onward: 6.9% compared with 2.2% prior to 2007 (odds ratio [OR] = 3.35, 95% confidence interval [CI] = 3.03 to 3.70, p < 0.001). Male sex, moderate-to-high income, and younger age were associated with a greater proportion of operative fixation. The rate of surgery for clavicle malunion or nonunion also increased over this time period (to 4.1% from 3.4%, OR = 1.26, 95% CI = 1.15 to 1.38, p < 0.001).

Conclusions

We found a significant change in surgeon practice regarding operative management of clavicle fractures following the publication of a Level-I RCT. With limited high-quality trials comparing operative and nonoperative management, it is important that clinicians, health-care institutions, and health-authority administrations determine what steps can be taken to increase responsiveness to new clinical studies and evidence-based guidelines.

Level of Evidence

Prognostic Level III. See Instructions for Authors for a complete description of levels of evidence.

In which context and for whom can interventions improve leadership of surgical trainees, surgeons and surgical teams and why: a realist review protocol

Background

Improving effective leadership of individuals, groups, and healthcare organisations is essential for improving surgical performance and indirectly improving health outcomes for patients. Numerous systematic reviews have been conducted which seek to determine the effectiveness of specific leadership interventions across a range of disciplines and healthcare outcomes. The purpose of this realist review is to systematically synthesise the literature which examines in which context and for whom leadership interventions improve leadership of surgeons, surgical teams, and trainees.

Methods

Several approaches will be used to iteratively search the scientific and grey literature to identify relevant evidence. Selected articles will inform the development of a programme theory that seeks to explain in which context and for whom interventions can improve leadership of surgical trainees, surgeons, and surgical teams. Next, empirical studies will be searched systematically in order to test and, where necessary, refine the theory. Once theoretical saturation has been achieved, recommendations for advancing leadership in surgery will be developed. Stakeholder and patient and public consultations will contribute to the development of the programme theory. The review will be written up according to the Realist And Meta-narrative Evidence Synthesis: Evolving Standards publication standards. No ethical review will be required for the conduct of this realist review.

Discussion

The knowledge gained from this review will provide evidence-based guidance for those planning or designing leadership interventions in surgery. The recommendations will help policymakers, educationalists, healthcare providers, and those delivering or planning leadership development programmes across the surgical disciplines to design interventions that are acceptable to the surgical community and successful in improving surgical leadership.PROSPERO registration: CRD42021230709.

Budd-Chiari syndrome in myeloproliferative neoplasms: A review of literature

Myeloproliferative neoplasms (MPNs) are defined as clonal disorders of the hematopoietic stem cell in which an exaggerated production of terminally differentiated myeloid cells occurs. Classical, Philadelphia-negative MPNs, i.e., polycythemia vera, essential thrombocythemia and primary myelofibrosis, exhibit a propensity towards the development of thrombotic complications that can occur in unusual sites, e.g., portal, splanchnic or hepatic veins, the placenta or cerebral sinuses. The pathogenesis of thrombotic events in MPNs is complex and requires an intricate mechanism involving endothelial injury, stasis, elevated leukocyte adhesion, integrins, neutrophil extracellular traps, somatic mutations (e.g., the V617F point mutation in the JAK2 gene), microparticles, circulating endothelial cells, and other factors, to name a few. Herein, we review the available data on Budd-Chiari syndrome in Philadelphia-negative MPNs, with a particular focus on its epidemiology, pathogenesis, histopathology, risk factors, classification, clinical presentation, diagnosis, and management.

Vacuoles in the Breast: A Histologic Clue for an Unusual Presentation of an Atypical Organism

Infections with nontuberculous mycobacteria (NTM) are increasing in prevalence worldwide, and this group of organisms is emerging as significant clinical pathogens. We present a case of a 58-year-old female with persistent furuncles of the breast who was found to have an NTM infection. This case is unique for the lack of risk factors for NTM in the patient's history, the location of the infection in the breast, and the close cooperation needed across disciplines to arrive at the diagnosis. This multi-disciplinary discussion considers the classic clinical presentation of NTM, it is a characteristic morphological appearance on histopathology, the differential diagnosis, treatment, and the ultimate outcome of the case. This case report and discussion will assist both clinicians and pathologists in the diagnosis of this important infectious disease.

Survival and clinical success of endovascular intervention in patients with Budd-Chiari syndrome: A systematic review

Budd-Chiari syndrome is a complex clinical disorder of hepatic venous outflow obstruction, originating from the accessory hepatic vein (HV), large HV, and suprahepatic inferior vena cava (IVC). This disorder includes both HV and IVC obstructions and hepatopathy. This study aimed to conduct a systematic review of the survival rate and clinical success of different types of endovascular treatments for Budd-Chiari syndrome (BCS). All participant studies were retrieved from four databases and selected according to the eligibility criteria for systematic review of patients with BCS. The survival rate, clinical success of endovascular treatments in BCS, and survival rates at 1 and 5 years of publication year were calculated accordingly. A total of 3398 patients underwent an endovascular operation; among them, 93.6% showed clinical improvement after initial endovascular treatment. The median clinical success rates for recanalization, transjugular intrahepatic portosystemic shunt (TIPS), and combined procedures were 51%, 17.50%, and 52.50%, respectively. The median survival rates at 1 and 5 years were 51% and 51% for recanalization, 17.50% and 16% for TIPS, and 52.50% and 49.50% for combined treatment, respectively. Based on the year of publication, the median survival rates at 1 and 5 years were 23.50% and 22.50% before 2000, 41% and 41% in 2000‒2005, 35% and 35% in 2006‒2010, 51% and 48.50% in 2010‒2015, and 56% and 55.50% after 2015, respectively. Our findings indicate that the median survival rate at 1 and 5 years of recanalization treatment is higher than that of TIPS treatment, and recanalization provides better clinical improvement. The publication year findings strongly suggest progressive improvements in interventional endovascular therapy for BCS. Thus, interventional therapy restoring the physiologic hepatic venous outflow of the liver can be considered as the treatment of choice for patients with BCS which is a physiological modification procedure.