This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: GIT, Subject name: Surgery
Which is false about Crohn's disease? 
Select and explain. 
A. No recurrence after surgery, B. Aphthous ulcer, C. Skip lesions, D. Fistula formation
A: No recurrence after surgery
Answer: A: No recurrence after surgery 
Explanation: Crohn's disease (CD) can invade any pa of GIT from the oral cavity to the anus. Studies show that 70% of patients with CD will require a bowel resection in the first decade after diagnosis and 40% will require a fuher resection * Since surgery does not cure CD, the fundamental principle is to preserve healthy gut and to maintain adequate function. As the disease might recur after the surgery. Surgery is palliative in Crohn's disease whereas curative in Ulcerative colitis (UC). In UC disease stas from rectum and the fuher proceeds to the colon. Hence a single proctocolectomy is performed which is curative.