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Riedel thyroiditis

Riedel thyroiditis (fibrous thyroiditis) is a rare condition charachterized by dense fibrosis of the thyroid gland that may extend into surrounding soft tissues and skeletal muscle. Clinically, it may cause airway compression or mimic thyroid malignancy. Riedel thyroiditis is considered an organ specific manifestation of hyper-IgG4 disease.

See also: Kuttner tumor, Ormond disease

Last updated: June 7, 2012, 4:20 pm EST

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