CC BY-NC-ND 4.0 · THORAC CARDIOV SURG Reports 2019; 08(01): e24-e26
DOI: 10.1055/s-0039-1692188
Case Report: Thoracic
Georg Thieme Verlag KG Stuttgart · New York

Massive Thymic Hyperplasia Mimicking Anterior Mediastinal Neoplasia in Occult Graves' Disease

Christopher James Kennedy
1  Department of Cardiothoracic Anaesthetics, Fiona Stanley Hospital, Perth, Western Australia, Australia
David James William Paton
2  Department of Anatomical Pathology, PathWest Tissue Pathology, Perth, Western Australia, Australia
› Author Affiliations
Further Information

Publication History

13 February 2019

13 March 2019

Publication Date:
15 July 2019 (online)



Background Thymic hyperplasia is a recognized complication of Graves' disease that can present radiologically as an anterior mediastinal mass.

Case Description We present a unique case of massive thymic hyperplasia occurring in a 24-year-old female without a known history of thyroid or other systemic disease in whom Graves' disease first manifested intraoperatively during thymectomy for presumed neoplasia.

Conclusion We suggest that the work-up of all anterior mediastinal masses should include a comprehensive search for medical causes of reversible thymic enlargement.