title: Thymic seminoma and myasthenia gravis.
abstract: Computed tomography detected an enlarged thymus in a 27-year-old man with myasthenia gravis of recent onset. Pathological examination of the thymus revealed lymphoid hyperplasia and a thymic seminoma (or germinoma), which was arising as an intramural nodule in a thymic cyst. This is the first reported association of thymic seminoma, lymphoid hyperplasia, and myasthenia gravis.
mesh_terms: D000328:Adult; D004407:Dysgerminoma / Q000150:complications* / Q000601:surgery / Q000648:ultrastructure; D006801:Humans; D006965:Hyperplasia; D008221:Lymphoid Tissue / Q000473:pathology; D008297:Male; D008854:Microscopy, Electron; D009157:Myasthenia Gravis / Q000150:complications*; D013953:Thymus Neoplasms / Q000150:complications* / Q000601:surgery / Q000648:ultrastructure; D014057:Tomography, X-Ray Computed