"Ask the Expert” features answers by our experts to your clinical questions. Question: What is the role of PET/CT in the follow-up of colorectal cancer if synchronous liver metastasis was resected along with the primary tumor? At what time interval should the scans be done? And for how long?Answer: I don’t use PET/CT scans as follow-up tests. I do use PET/CT pre-op before stage IV resection. After liver resection, I obtain a baseline CT scan and then perform CT scans of the abdomen/pelvis every...