Fig. 3.

Whole-body PET/CT with 18F-FDG after systemic treatment (6 cycles of EP chemotherapy). Interval regression of the gallbladder mass with hepatic extension (S5, S4b) and marked reduction of metabolic activity (red arrows). Complete resolution of previously hypermetabolic lymph nodes in the porta hepatis, para-aortic region, and mesenteric site (yellow arrows).