A 29-year-old man with a marfanoid habitus, peculiar mucosal neuromas of the lips and tongue, high arched palate, hyperplastic corneal nerves, and hypertension was found at operation to have medullary carcinoma of the thyroid, parathyroid hyperplasia, and pheochromocytoma. These symptoms and findings are characteristic of multiple endocrine adenomatosis (MEA IIb) syndromes.
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Marshall B. Block (1975) studied this question.
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