[A Case of Gallbladder Cancer Diagnosed by Pathology after Full-Thickness Cholecystectomy and Death Due to Early...

A 69-year-old man underwent chemotherapy for bladder recurrence after right ureteral cancer surgery, and blood tests showed CA19-9 levels of 7,700 U/mL. Abdominal plain CT scans showed wall thickening at the fundus of the gallbladder. MRCP, endoscopic ultrasound(EUS), and contrast CT scans were performed, and the patient was diagnosed with adenomyomatosis of the gallbladder and underwent laparoscopic cholecystectomy with full-thickness dissection. Postoperative pathological examinations showed adenocarcinoma cells in the Rokitansky-Aschoff sinus(RAS), and the patient was diagnosed with gallbladder cancer(pT2, N0, M0, INF b, ly0, v0, n0, CM0, EM0, Stage Ⅱ). The postoperative course was uneventful, and the patient was discharged 2 days after surgery. A second stage operation was planned, but FDG-PET/CT scans performed 5 weeks after surgery showed ascites and abnormal accumulation suggestive of peritoneal dissemination. The patient subsequently died 4 months after surgery due to progression of the primary disease.