Multiple endocrine neoplasia, type IIB (MEN IIB)

Photo of tumors of lip and mouth nerves caused by multiple endocrine neoplasia, type IIB

Pheochromocytoma can occur in the inherited syndrome multiple endocrine neoplasia, type IIB (MEN IIB). In addition to pheochromocytoma, people with MEN IIB also have thyroid cancer and tumors of nerves in the lips, mouth, eyes and digestive tract.

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