Generalized Lymphadenopathy and Nephrotic Syndrome as a Manifestation of Mephenytoin (Mesantoin) Toxicity

: This report describes a patient who developed marked generalized adenopathy and nephrotic syndrome while receiving mephenytoin (mesantoin) for a seizure disorder. Renal biopsy showed a diffuse proliferative glomerulonephritis. Lymph node histopathology revealed replacement of parenchyma with lymphocytes, eosinophils, and reticuloendothelial cells. A hypersensitivity reaction is postulated as the etiology of both these processes.