Lymphocytic colitis

Medium power view of a colonic biopsy from a patient with lymphocytic colitis shows intraepithelial and lamina propria lymphocytic infiltrate.

Low (left) and high (right) power views of a biopsy of a normal colon. Low power reveals straight crypts and mild lamina propria mononuclear cell infiltration. High power shows the surface enterocytes with interspersed goblet cells (arrows).