Multiple Endocrine Neoplasia Type 2B

**Semantic type:** Neoplastic Process

**Definition:** Multiple endocrine neoplasia caused by mutation of the RET gene. Patients develop medullary thyroid carcinomas and numerous neural defects including neuromas.

**Synonyms:** - MEN 2B - MEN IIB - MEN Type 2B - MEN Type IIB - Multiple Endocrine Adenomatosis Type IIB - Multiple Endocrine Neoplasia Type 2b - Multiple Endocrine Neoplasia Type 3 - Multiple Endocrine Neoplasia Type IIB - Multiple Endocrine Neoplasia Type III - Multiple Endocrine Neoplasia, Type III - Multiple endocrine neoplasia [MEN] type IIB