RT Journal Article SR Electronic T1 Riedel's Thyroiditis in Multifocal Fibrosclerosis: CT and MR Imaging Findings JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 320 OP 321 VO 21 IS 2 A1 Özgen, Ali A1 Cila, Aysenur YR 2000 UL http://www.ajnr.org/content/21/2/320.abstract AB Summary: Riedel's thyroiditis is a rare disorder of unknown etiology and may be seen isolated or as a part of multifocal fibrosclerosis. It is important to distinguish Riedel's thyroiditis from thyroid carcinoma. Reports about imaging features of Riedel's thyroiditis are limited in the radiologic literature. We describe herein CT and MR imaging features of Riedel's thyroiditis in a case of multifocal fibrosclerosis with previously unreported radiologic observations.