case_images: PMC3913424_01
case_images: The presenting umbilical nodule as seen on CT in 2008.
case_images: rjt09801.jpg
case_images: PMC3913424_01_rjt09801.jpg
case_images: RJT098F1
case_images: Given his previous colorectal disease, a repeat colonoscopy and computed tomography (CT) scan (Fig. 1) were arranged and the carcinoembryonic antigen (CEA) level was checked.
case_images: PMC3913424_02