Extensive porto-mesenteric thrombosis presents a significant challenge in liver transplantation and was previously considered a contraindication. However, advancements in surgical techniques have made liver transplantation feasible. For optimal allograft function, adequate portal flow is crucial, as it generates shear stress that stimulates regeneration. In such cases, portal inflow options include the left renal vein (reno-portal anastomosis; RPA), the inferior vena cava (cavo-portal hemi-transposition; CPHT), any patent splanchnic territory, portal vein arterialization, or multi-visceral transplantation. Among these, CPHT and RPA are the most commonly performed. Generally, CPHT is used in pediatric liver transplantation; however, it is rarely reported in adult living donor liver transplantation (LDLT) due to technical challenges. In this report, we describe our technical modifications to CPHT and present the results in two patients with extensive porto-mesenteric thrombosis who underwent LDLT.

Background: Acute-on-chronic liver failure (ACLF) is associated with high mortality, but transplantation improves survival. Optimizing organ function is time-consuming and can increase infection risk. This study investigated the optimal pretransplant waiting period. Methods: In this retrospective study of patients with ACLF who underwent transplantation between January 2021 and August 2024, perioperative details and morbidity were compared between survival and mortality groups. Receiver operating characteristic (ROC) analysis was used to determine the cutoff for the pretransplant waiting period. Results: Among 112 patients with ACLF under the European Association for the Study of the Liver criteria, 61 (54.5%) underwent living donor liver transplantation (mean age, 41 years; 51 males [83.6%]). The most common etiology was viral infection (44.2%). The median Chronic Liver Failure Consortium (CLIF-C) score was 44 (respiratory failure, 14.7%; renal failure, 16.4%). There were 14 (22.9%) posttransplant deaths. The median waiting period between admission and surgery was longer in the mortality group (8 vs.4 days, P=0.2). The area under the ROC curve for the optimal pretransplant waiting period was 0.723 (P=0.01). A cutoff of 5 days predicted mortality with 71.4% sensitivity and 61.9% specificity. On univariate analysis, survivors and nonsurvivors differed significantly in age, hemoglobin level, warm ischemia time, and postoperative gastrointestinal (GI) bleeding; on multivariate analysis, postoperative GI bleeding independently predicted mortality. During a median follow-up of 17 months, no deaths occurred. Conclusions A pretransplant waiting period of 5 days predicted mortality; furthermore, postoperative GI bleeding was an independent predictor of mortality. Further studies are required to confirm these findings.

The malignant transformation of chronic fistula in ano is rare, accounting for 3% to 11% of all anal canal malignancies. It results from long-standing inflammation and chronic irritation. No guidelines are available for the management of these cases. We herein present a case report of a 55-year-old man who presented with a history of constipation, perianal pain, and discharging fistula in ano of 4-year duration and underwent fistula surgery with recurrence. Biopsy of the fistulous tract revealed adenocarcinoma. He received neoadjuvant chemoradiotherapy, followed by abdominoperineal excision including excision of the fistulous tract. After 18 months of follow-up, he is free of recurrence. We present this case with a review of the literature, highlighting the management strategies.