Endocrine Abstracts

Introduction: Parathyroid tumors are the most common (90%) and usually the first manifestation feature of MEN1 syndrome. The occurrence of anterior pituitary tumors in MEN1 syndrome may range between 10% and 60%. Pituitary involvement includes the initial manifestation of MEN1 syndrome in 10% to 25% of individuals and usually show more aggressive behavior; 20% secrete prolactin, fewer than 10% secrete GH, 5% secrete ACTH, and the remainder appear to ...