MEN1 and smooth muscle tumor: Other cases of uni- and multifocal smooth muscle tumors in MEN1 patients have been reported in the English literature (24, 25, 52, 87, 95–104) and, in addition to the aforementioned sites, these tumors have arisen in the ureter (96), bladder (97), epididymis (87), ventricle (87), and small bowel (87, 103).