This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Disorders of Gastrointestinal System Including Diarrhea, Subject name: Pediatrics
True about Crohn disease are all EXCEPT? 
Select and explain. 
A. Loss of haustration, B. Growth failure, C. Cobblestone colon, D. Perianal fistula formation
A: Loss of haustration
Answer: A: Loss of haustration 
Explanation: Discussing about the options one by one, a. Loss of haustrations is a feature of ulcerative colitis b. Growth failure can even be the only manifestation of Crohn disease. c. Linear ulcers can give a cobblestone appearance to the mucosal surface in Crohn disease d. Perianal disease is common (tag, fistula, deep fissure, abscess) in Crohn disease