A biopsy was taken from the affected part of the rectum. The microscopic examination reveals the distortion of luminal surface of the mucosa and rectal glands with mixed inflammatory infiltrate in the lamina propria comprised of lymphocytes , plasma cells and polymorph. Small areas of cryptitis are seen. Occasional crypt abscess is seen. No evidence of dysplastic change of the lining cells of the glands.
Histological picture is consistent with ulcerative colitis.
A colonoscopy was done where rectum ,sigmoid colon and descending colon revealed loss of normal vascular pattern,hypersamia,friability in a diffused manner ulceration. The transverse colon is normal except for a patch of 5 cms showing above findings in mid tranverse. At present after 2 months of treatment, the no. of stools has reduced to 4-5 times per day with litle mucos and insignificant blood. The symptomatic treatment of dysentry did not give any respite. A biopsy was taken from the affected part of the rectum.