Colorectal Cancer

A 50-year-old man with no significant medical history and no prior colonoscopy presented to our clinic with severe, constant, throbbing anal pain that had been worsening over the past 5 days.

A 22-year-old African American woman presented to a community hospital emergency department with diffuse, sharp abdominal pain at the right lower quadrant, associated with nausea and poor appetite. She had...