Abstract:Multiple endocrine neoplasia type III (MEN 3), also known as MEN 2b, is a syndrome that may be recognized at a young age by its characteristic numerous mucosal neuromas and marfanoid habitus. These features are generally evident before the development of medullary thyroid carcinoma and pheochromocytoma, allowing for early diagnosis and intervention. Much has been learned recently in this regard to reduce morbity and mortality. In addition, periodic screening of first‐degree relatives of patients with MEN 3 has proved effective in detecting familial cases. Finally, new findings have been made regarding the etiology of MEN 3, with potentially wide‐ranging implicati
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