Fig. 3
From: 18F-FDG PET/CT in therapy response assessment: oligometastatic colorectal cancer
A 58-year-old man with recto-segmoid carcinoma. A baseline PET/CT scan (A, B, and C) revealed a hypermetabolic primary mass with surrounding fluid collection on the right side. There were also active nodal lesions in the pelvis. The post-therapy PET/CT scan (D, E, and F Figures) is consistent with a progressing disease state, as evidenced by increasing activity of the primary mass and the emergence of adherent large heterogeneous pelvic mass and small mesenteric sub-centimetric active lymph nodes. Current regression of the old pelvic nodal lesion and the resolution of the pelvic fluid collection and development of pelvi-abdomianal ascites