Can diveticulosis (not itis) be mistaken for colon cancer on ct scan? had sigmoidoscopy to 35 cm and 4 ct scans over past three years.

Not usually: Diverticulosis has quite a different appearance than cancer of the colon and it would be unlikely that the two would be confused by the radiologist if the diverticulosis was straightforward.

NO: Both CA and tics have different morphology. That said, it doesn't mean a small cancer can go undetected in an area of tics. Colonoscopy is the gold standard. Why so many CTs ???