J Korean Soc Endocrinol.  2003 Oct;18(5):481-488.

A Case of Multiple Endocrine Neoplasia 2A with Germ Line Mutation of RET Gene

Affiliations
  • 1Department of Internal Medicine, College of Medicine, Korea University, Seoul, Korea.

Abstract

Multiple endocrine neoplasia 2A (MEN 2A) is an autosomal dominantly inherited disease, composed of medullary thyroid carcinoma, pheochromocytoma and hyperparathyroidism. The activation of germ-line mutations in the RET proto-oncogene are responsible for MEN 2. The analysis of the RET mutations has replaced the measurement of the calcitonin level in the diagnosis of the MEN carrier state. Specific RET codon mutations correlate with the MEN 2 syndromic variant, the age at onset of the medullary thyroid carcinoma (MTC) and the aggressiveness of the MTC. Herein, our experience of a 47-year-old woman, who had a bilateral pheochromocytoma and MTC, and MEN 2A confirmed by the detection of an RET proto-oncogene mutation at axon 10 on codon 618, is reported. Her sister was found to have the same mutant gene. After a total thyroidectomy and bilateral adrenalectomy, the calcitonin and catecholamine levels were normalized, and the patient discharged without problems. This case is reported, with a review of the literature.


MeSH Terms

Adrenalectomy
Axons
Calcitonin
Carrier State
Codon
Diagnosis
Female
Germ Cells*
Germ-Line Mutation*
Humans
Hyperparathyroidism
Male
Middle Aged
Multiple Endocrine Neoplasia Type 2a
Multiple Endocrine Neoplasia*
Pheochromocytoma
Proto-Oncogenes
Siblings
Thyroid Neoplasms
Thyroidectomy
Calcitonin
Codon
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