Snapshot A 66-year-old man presents to his primary care physician for a routine exam. He reports a change in his bowel habits and noticed his stool is pencil thin. He also endorses an unintentional 15-pound weight loss over the course of 1 month. His father died of colon cancer when he was 65 years of age. Physical examination is notable for tenderness upon palpation in the left abdomen. Colonoscopy is notable for a colonic mass in the descending colon. Introduction Overview login to view 2 more bullets Epidemiology Incidence login to view 1 more bullet Demographics login to view 2 more bullets Risk factors login to view 10 more bullets ETIOLOGY Pathogenesis login to view 11 more bullets Associated conditions login to view 2 more bullets Presentation Clinical presentation depends on the location of the colorectal cancer Symptoms/physical exam warranting colonoscopy login to view 13 more bullets Imaging Colonoscopy login to view 13 more bullets Differential Diverticulitis login to view 2 more bullets Treatment Treatment is geared towards the staging of the malignacy Surgical login to view 4 more bullets