This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Surgery
[{'content': 'Most common presentation of Benign Small bowel tumours include \nSelect and explain. \nA. Small bowel obstruction, B. With mass effect, C. Recurrent gastrointestinal bleeding, D. Incidental finding on laparotomy', 'role': 'user'}, {'content': 'Answer: D \nExplanation: .Malignant tumours of small bowel * Adenocarcinoma is commonest - 40%. Order of occurrence - duodenum, jejunum and ileum * GIST is new entity comprising smooth muscle tumors also * Carcinoid and lymphoma has got better prognosis * Adenocarcinoma and GIST has got poor prognosis * Presentations are pain, diarrhoea, weight loss, anaemia, melaena, palpable mass, intestinal obstruction and metastatic features * Bleeding and perforation are common in lymphoma and sarcoman * Enteroclysis/capsule endoscopy/CT scan/histochemistry are needed to diagnose * Surgery is the main therapy * Imatinib is used in GIST with ourable results. ref:SRB&;s manual of surgery ,ed 3,pg no 812', 'role': 'assistant'}]