surgeries and can have an important impact on the postsurgical evolution of the patient with bile duct pathology, in many cases it may represent greater severity than the primary condition reason for the surgical procedure; Hepaticojejunanastomosis is the surgery of choice however studies establish a limited half-life with high probability of reoperation. Objective: To estimate the half-life of hepatitcoyunoanastomosis first performed in the UMAE 25 of the IMSS in patients with bile duct lesions. Conclusions: The design of strategies in the repair of the bile duct requires institutional support according to the conditions of patients suffering from bile duct conditions, where the prevention of these conditions is based on an adequate mastery of biliary anatomy by the surgical team, as well as a good surgical technique, with the firm decision to convert to open surgery when laparoscopic surgery is not possible to identify the anatomical structures or failing that, the immediate transfer to a specialized center if required, positively influencing the evolution of the patient, reducing complications and ultimately mortality.

Gastrointestinal stromal tumors (GIST) are neoplasms of mesenchymal origin. We present the case of a patient with low gastrointestinal tract bleeding secondary to a gastrointestinal stromal tumor, as well as her diagnostic clinical approach in a third-level medical unit, as well as a brief review of the literature. The treatment of this neoplasm is surgical and ideally consists of complete resection with negative margins (R0). GISTs mostly affect patients between 4-6 decades of life with a slight predominance in women, with the stomach and small intestine being the most frequently affected organs. The immunohistochemical study shows positivity for c-KIT and CD34 in 100% and 63% of cases. The treatment is surgical which usually by maintaining free margins is curative