Claim: Cases of small intestine neuroendocrine tumor can be diagnosed after an examination for carcinoid syndrome or after a routine surgery for bowel obstruction.
Evidence: A small intestine neuroendocrine tumor is a carcinoid in the distal small intestine or the proximal large intestine. A large fraction of cases are diagnosed after routine surgery for bowel obstruction. Others may be diagnosed incidentally, or after investigation for carcinoid syndrome.