Previously Unreported Pseudomembranous Duodenitis: A Case Report With Histopathology.

The pseudomembranous inflammatory process is a process characterized by the formation of a white membrane-like exudate over colonic mucosa and is mainly caused by Clostridium difficile toxin. The stool culture is considered to be the gold standard and is technically challenging and is not performed routinely. There are some reports of duodenitis and proximal jejunitis in horses attributed to Clostridium difficile infection. Hereby, we report a case of pseudomembranous duodenitis in a seven-year-old boy with a complaint of severe abdominal pain. Upper endoscopy revealed patchy ulceration and a white membrane in the duodenum. A biopsy was taken with the impression of a fungal infection. The histological study revealed crater-like ulceration with upward exudation of mucus consistent with the pseudomembranous inflammatory process. To the best of our knowledge, pseudomembranous duodenitis is not reported in the human as yet.