This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Small & Large Intestine, Subject name: Surgery
Which is not seen in massive resection of small bowel? 
Select and explain. 
A. Hypogastrinemia, B. Vitamin B12 deficiency, C. Malabsorption, D. Oxalate stone
A: Hypogastrinemia
Answer: A: Hypogastrinemia 
Explanation: Ans. (a) HypogastrinemiaRef: Sabiston 19th edition, page 1274-1276* Due to loss of small intestine feedback inhibition to gastrin is lost -- hence there will be hypergastrinemia* 70% resection can be tolerated in small intestine* Proximal bowel resection is tolerated much better than distal bowel* Presence of terminal ileum and IC valve is much tolerated