Abstract:A syndrome of ultimobranchial thyroid tumors (UTT) of aged bulls shares many characteristics with medullary thyroid carcinoma in man (Black et al. Cancer 32:867-878, 1973). Multiple endocrine tumors (pheochromocytomas, pituitary adenomas) and severe skeletal disease (vertebral osteosclerosis with ankylosing spondylosis and degenerative osteoarthrosis) often are detected coincidentally in bulls with UTT. Parathyroid hyperplasia or chief cell adenomas have been reported to occur frequently in humans with familia… Show more
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