Clinical remission and histopathological resolution of nodular lesions in a patient with gamma3 heavy-chain deposition disease.

Heavy-chain deposition disease (HCDD) is a rare entity accompanying to nonamyloidotic monoclonal immunoglobulin deposition disease. We report a case of gamma3-HCDD in which follow-up biopsy could be done after complete remission was achieved by chemotherapy. Follow-up biopsy 2 years after initial biopsy showed remarkable diminution of both nodular glomerular lesions and IgG heavy-chain deposits. This is the first case report to indicate that the original structure of glomeruli in patients with HCDD could be restored within a few years by an appropriate treatment at an early stage of the disease.