This gross appearance is characteristic for ulcerative colitis. The most intense inflammation begins at the lower right in the sigmoid colon and extends upward and around to the ascending colon. At the lower left is the ileocecal valve with a portion of terminal ileum that is not involved. Inflammation with ulcerative colitis tends to be continuous along the mucosal surface and tends to begin in the rectum.

What are the lesions seen here on the mucosa called?

A Hamartomatous polyps

B Hyperplastic polyps

C Pseudopolyps

D Tubular adenomas

E Villous adenomas