The mucosa of the rectum and sigmoid colon appear uniformly inflamed, with multiple erosions. There is no contact bleeding. Biopsies show inflammation of the mucosa and submucosa only, with distortion of the crypts, crypt abscesses and lymphoid aggregates.
Stool Microscopy + Culture
Appearance: semi solid
Pus cells: field full / hpf
RBC: field full / hpf
No amoeba, ova or cysts identified