Neoplasms of the small intestine are uncommon. Benign tumors can include leiomyomas, fibromas, neurofibromas, and lipomas. Seen here at the ileocecal valve is another tumor that has a faint yellowish color. This is a well-differentiated neuroendocrine tumor ("carcinoid" tumor). Most benign tumors are incidental submucosal lesions, though rarely they can be large enough to obstruct the lumen.