title: Anterior mediastinal mass in a patient with Graves' disease.
abstract: Thymic hyperplasia is a common feature in Graves' disease. However, in most cases, thymic enlargement is minimal, and radiologically detectable massive enlargement of the thymus is infrequently reported. Half of them undergo thymectomy due to the concern about a thymoma. We report a 28-year-old woman with untreated Graves' disease. She had an anterior mediastinal mass that was diagnosed as true thymic hyperplasia by biopsy and disappeared after treatment of the hyperthyroid state. Recognizing the association between thymic hyperplasia and Graves'disease, and existence of the benign course after treatment of the hyperthyroidism may be useful for avoiding unnecessary surgical procedure.
authors.affiliation: Division of Thoracic Surgery, Kanagawa Cancer Center, Yokohama, Japan. kaz-genesis@mvb.biglobe.ne.jp
authors.forename: Kazuki
authors.initials: K
authors.lastname: Yamanaka
authors.forename: Haruhiko
authors.initials: H
authors.lastname: Nakayama
authors.forename: Katsuya
authors.initials: K
authors.lastname: Watanabe
authors.forename: Yoichi
authors.initials: Y
authors.lastname: Kameda
mesh_terms: D000328:Adult; D005260:Female; D006111:Graves Disease / Q000473:pathology*; D006801:Humans; D006965:Hyperplasia; D013950:Thymus Gland / Q000000981:diagnostic imaging / Q000473:pathology*; D014057:Tomography, X-Ray Computed