Tumor disappearance on positron emission tomography computed tomography after S-1 treatment for postoperative local recurrence of gallbladder cancer
Objective: Gallbladder cancer (GBC) typically follows an aggressive course with the standard of care for advanced disease; complete responses are rarely encountered.We report a case in which tumor disappearance on here positron emission tomography computed tomography (PET-CT) was treated with S-1 as the second-line treatment for local recurrence of