A Possible New Multiple Endocrine Neoplasia Mutation in a Patient with a Prototypic Multiple Endocrine Neoplasia Presentation

Cardiorenal Medicine

Mariana Touza¹  Norman S. Litofsky¹  Stephen Brietzke¹  Lilamani Romayne Kurukulasuriya¹  James R. Sowers¹  Rino Buzzola¹ 

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关键词: Multiple endocrine neoplasia;    Mutation and tumor;    Hyperparathyroidism;    Acromegaly;   

DOI  :  10.1159/000440985

学科分类：心脏病和心血管学

来源: S Karger AG

【 摘 要 】

Background: Multiple endocrine neoplasia (MEN) type 1 syndrome is an uncommon inherited disorder characterized by the occurrence of tumors involving two or more endocrine glands. These tumors include pheochromocytoma, adrenal cortical and neuroendocrine tumors including (bronchopulmonary, thymic, gastric), lipomas, angiofibromas, collagenomas, and meningiomas. MEN-4 is very rare and has been characterized by the occurrence of parathyroid and anterior pituitary tumors in association with tumors of the adrenals, kidneys, and reproductive organs. Summary: We report the case of a 40-year-old male without significant family history of endocrine disease who was found to have primary hyperparathyroidism, a pituitary tumor causing acromegaly, thyroid cancer, renal cell carcinoma, and pancreatic cysts. We posit that this represents a new version of MEN-4. While renal tumors (angiomyolipoma) have been reported as part of the MEN-4 phenotype, to our knowledge, this is the first case reported of the association of MEN-1 and/or MEN-4 phenotype with this unique constellation of tumors, including renal cell carcinoma. Interestingly, this patient tested negative (DNA sequencing/deletion) for MEN-1 (menin), MEN-4 (CDKN1B) and VHL genes. Key Message: Thus, while this case has clinical characteristics consistent with either MEN-1 or MEN-4, it may represent a unique genetic variant.

【 授权许可】

Unknown