Abstract
Paraneoplastic glomerulonephritis is an infrequent complication in the course of non-Hodgkin's lymphoma (21 cases to date). We report a modality not previously described: mesangioproliferative glomerulonephritis and mixed lymphocytic lymphoma, and review the literature on the subject. The onset of the two processes was simultaneous. Antitumour treatment induced simultaneous remission of the lymphoma and glomerulonephritis.