Rapid progression of sarcomatoid carcinoma of the common bile duct

narrowing in mid CBD (Fig. 1). Brush cytology smears from the distal bile duct showed atypical cell, suggesting adenocarcinoma. We did not perform liver mag-netic resonance imaging because there was no suspicion of liver metastasis on CT. Preoperative imaging stage was T2 or T3N0M0. Since sarcomatoid carcinoma in the common bile duct (CBD) is rarely reported, the clinical course and prognosis after surgery are unclear. We report a case of a patient who died within 1 month after surgery due to rapid tumor progression. A 65-year-old woman had abdominal pain with jaundice. She was diagnosed with CBD cancer and underwent pancreatoduodenectomy. Pathologic examination revealed sarcomatoid carcinoma. There was no postoperative complication, but multiple liver metastasis was diagnosed on computed tomography at 7 days after surgery. Also, the patient complained of abdominal pain and had jaundice with elevated liver enzyme on the 14th postoperative day. Her general condition was getting worse and she died of hepatic failure 23 days after surgery. We report a case of sarcomatoid carcinoma of the CBD that progressed very rapidly. Further research and case reports are needed to establish proper diagnostic and treatment tools.