TOPICS: Affects multiple organs, autosomal dominant, MEN1, tumor suppressor, chromosome 11, pituitary tumors, prolactin, GH, headaches, visual defects, primary hyperparathyroidism, hypercalcemia, hypophosphatemia, recurrent nephrolithiasis, pancreatic endocrine tumors, gastrinoma, insulinoma, VIPoma, glucagonoma, angiofibroma, collagenoma, meningioma, MEN2A, MEN2B, RET, oncogene, receptor tyrosine kinase, neural crest, primary hyperparathyroidism, pheochromocytoma, HTN, headache, sweating, tachycardia, medullary thyroid carcinoma, calcitonin, parafollicular (C) cells, prophylactic thyroidectomy, mucosal neuromas, painless flesh-colored papules, marfanoid habitus, zollinger ellison syndrome, recurrent peptic ulcers, diarrhea, iron deficiency anemia, secretory diarrhea, dermatitis, diabetes, DVT, declining weight, depression