Diseases [C] » Neoplasms [C04] » Neoplasms by Histologic Type » Neoplasms, Germ Cell and Embryonal » Teratoma » Struma Ovarii
Description
A rare teratoid tumor of the ovary composed almost entirely of thyroid tissue, with large follicles containing abundant colloid. Occasionally there are symptoms of hyperthyroidism. 5-10% of struma ovarii become malignant, the only absolute criterion for which is the presence of metastasis. (Dorland, 27th ed; Segen, Dictionary of Modern Medicine, 1992) MeSH
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