[Nephrotic syndrome as first presentation of malignant thymoma: description of a clinical case].

Thymoma is a rare neoplasm originating from thymic epithelial cells. It is associated with paraneoplastic syndromes and a severe form of immunodeficiency. Kidney involvement is rare. We report the case of a 66-year-old woman affected by nephrotic syndrome and kidney failure. A diagnosis of thymoma was made after several months of hemodialysis. Numerous comorbidities made specific treatment impossible and the patient died one year after the diagnosis of thymoma.