Malignancy after renal transplantation in the new era of immunosuppression.

Background: This retrospective single-center study was undertaken to assess the occurrence of de novo neoplasms in renal transplant recipients according to the immunosuppressive regimen and time after transplantation.

Material/methods: Observation encompassed 1028 patients transplanted between the years 1983-2006 and followed for 0.5-23 years.