label: multiple endocrine neoplasia type 2B
label_lc: multiple endocrine neoplasia type 2b
description: "Multiple endocrine neoplasia 2B (MEN2B) syndrome is a rare aggressive form of MEN2 characterized by medullary thyroid carcinoma (MTC), pheochromocytoma, mucosal ganglioneuroma, and marfanoid habitus."