Question: I have a question regarding a potential post-surgical infection in the large intestine/rectum region. My grandfather recently discovered he had early-stage upper rectal cancer. He went through surgery and had it removed. After tissue examination, the surgeon says the surgery was successful and they were able to remove the early-stage cancer. They stitched the intestine wound back up. However, he has had a fever (38-39 Celsius), diarrhea, and weight loss after surgery. The doctors believe that the wound might either be infected, not healed properly, or not stitched properly (causing there to be a potential opening). A stool sample showed no abnormal pathogens. If possible, I am hoping for some suggestion on what tests to do next to find the source of the high fever problem. I was told a colonoscopy might cause further damage to the wound and a radioactive enema might cause damage if it leaks into the abdominal cavity. Any suggestions would be appreciated.