Neuromuscular and vascular hamartoma of small bowel.

Two examples of a hitherto undescribed hamartomatous condition of the small intestine are presented. They consist of fascicles of smooth muscle derived from the muscularis mucosae, bundles of unmyelinated nerve fibres with scattered ganglion cells, and haemangiomatous vessels, occurring focally within a segment of the intestine, and causing stenosis.