Adenosquamous Carcinoma of Distal Bile Duct with Pancreatic Metastasis：A Case Report

This paper reports a rare case of adenosquamous carcinoma of the distal bile duct in a 69-year-old male patient.The patient visited the hospital due to jaundiced skin and sclera, and was diagnosed as adenosquamous carcinoma (lower common bile duct) after operation.Postoperative S-1 monotherapy was effective, and no tumor recurrence or metastasis was observed during follow-up.Distal bile duct adenosquamous carcinoma is characterized by strong invasion, easy recurrence and metastasis, and poor prognosis.Timely surgery and postoperative adjuvant therapy are essential to improve the prognosis.This case reflects the clinical characteristics and treatment status of the disease, which is of certain value to clinical practice.