Author/Authors :
Takahashi، Hiroaki نويسنده , , Minami، Manabu نويسنده Department of Diagnostic Radiology, University of Tsukuba Hospital, Ibaraki, Japan , , Masumoto، Tomohiko نويسنده Department of Diagnostic Radiology, University of Tsukuba Hospital, Ibaraki, Japan , , Hiyama، Takashi نويسنده Department of Diagnostic Radiology, University of Tsukuba Hospital, Ibaraki, Japan , , Kujiraoka، Yuka نويسنده Department of Diagnostic Radiology, Tsukuba Memorial Hospital, Ibaraki, Japan , , Nakamagoe، Mariko نويسنده Department of Otolaryngology, University of Tsukuba Hospital, Ibaraki, Japan , , Minami، Yuko نويسنده Department of Pathology, University of Tsukuba Hospital, Ibaraki, Japan ,
Abstract :
Ectopic cervical thymus (ECT) is an essentially benign condition that is identified during the development of the thymus, and is rare among the adult population. Thymic hyperplasia is another thymus-associated condition, which is known to occur secondary to hyperthyroidism. A 39-year-old woman with hyperthyroidism presented with an enlarging submandibular mass, which was diagnosed as a benign hyperplasia of the ECT. Computed tomography and magnetic resonance imaging largely contributed to its diagnosis, and an unnecessary surgical resection was avoided. To the best of our knowledge, this is the first report that describes clinically significant hyperthyroidism-induced ECT hyperplasia during adulthood.
