MEN1 and esophagus leiomyoma: Although an association between leiomyoma and MEN1 had been previously suggested by several case reports, Vortmeyer and colleagues first demonstrated the inactivation of MEN1 gene in the esophageal leiomyoma tissue of a MEN1 patient, suggesting that this neoplasm could share a common molecular cause with the main MEN1-associated tumors (76).