This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
Pipe stem appearance in barium enema is seen in- 
Select and explain. 
A. Crohns disease, B. Ulcerative colitis, C. Schistosomiasis, D. Carcinoma colon
B: Ulcerative colitis
Answer: B: Ulcerative colitis 
Explanation: Ans. is 'b' i.e., Ulcerative colitiso In UC, Transverse colon and left colon may show pipestem appearance on barium enema.