a *teratoma of the ovary containing thyroid tissue that becomes overactive and causes thyrotoxicosis. It is diagnosed by radioiodine scanning showing a high uptake in the pelvis; the treatment is surgical removal of the affected ovary.
a rare fibrosing destructive disorder of the thyroid gland that may spread to adjacent tissues and obstruct the airway. It is sometimes associated with fibrosis in other parts of the body, such as the bile duct or *retroperitoneal fibrosis. The treatment is surgical removal. [B. M. C. L. Riedel (1846–1916), German surgeon]... riedel’s struma
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