A case of thymoma mimicking an intra-thoracic thyroid nodule

Abstract

Thymomas are rare malignant tumour of the superior and anterior mediastinum. We report the case of a 77-year-old woman with a mediastinal nodule of uncertain origin. The clinical history of the patient and the imaging findings were suggestive of a lesion of thyroid origin. Histological and immunohistochemical analysis led to a histological diagnosis of thymoma with microscopic invasion of the surrounding tissue

Keywords

• thymoma, mediastinal masses, ectopic thyroid goiter, differential diagnosis