Tumors of the small bowel are rare, corresponding to only to 2% of all tumors of the digestive tract. Diagnosis of these lesions is usually late, and the majority of such tumors encountered intraoperatively are malignant. Carcinoids, or neuroendocrine tumors, of the small bowel, constituting 29% of all carcinoids of the digestive tract, are associated with distant metastases once they have achieved a size of 2 cm or larger. We hereby report the case of a woman with a large tumor, weighing 3 kg, originating in the submucosa of the jejunum, not invading its lumen, which invaded the wall of the transverse colon.