Endocrine Abstracts

Background: The occurrence of multiple endocrine tumors in the same patient is not always typical and cannot always be classified into a multiple endocrine neoplasia (MEN) type, McCune-Albright syndrome or the Carney complex. Schwannomas are mesenchymal tumors that originate from Schwann cells of peripheral nerve fibers that can associate in some syndromes. 90% cases are benign, involving usually the head, neck and extremities. They are rare in the retroperitoneal region (1&#1...