Thymic epithelial tumors and paraneoplastic autoimmune syndromes

Thymic epithelial tumors (TETs) are rare tumors of anterior mediastinum with an estimated incidence rate of 1–5 per million of the population per year (1). The group includes thymomas, thymic carcinomas and neuroendocrine tumors. They all derive from thymic epithelial cells and are malignant but they differ in morphology, biology and clinical course.