[A Case of Gallbladder Cancer with Distant Metastasis with Complete Response to Gemcitabine, Cisplatin, and Durvalumab].

A woman in her 50s visited the emergency department in May 20XX for abdominal pain and was diagnosed with hemorrhagic cholecystitis. Laparoscopic cholecystectomy was performed on the same day, and postoperative pathology results showed adenocarcinoma, pT3a(SE). The additional resection was attempted in June of the same year. However, metastasis was found in the para-aortic lymph node, and the tumor was determined unresectable. In July of the same year, we started a chemotherapy with a combination of gemcitabine, cisplatin, and durvalumab, and the lymph node metastasis was reduced by contrast-enhanced CT every 3 months. In January(20XX+1), we changed the chemotherapy only with durvalumab. As of 22 months after the start of chemotherapy, imaging has not revealed any re-progressive disease of lymph node metastases or new distant metastases.