Abstract Background Multiple endocrine neoplasia type 2 is an autosomal dominant disorder. MEN 2A is characterized by medullary thyroid carcinoma. pheochromocytoma and hyperparathyroidism; MEN 2B by medullary thyroid carcinoma. pheochromocytoma and characteristic stigmata. https://foldlyers.shop/product-category/wired-keyboards/