Postlymphoproliferative disorder affecting bone after a renal transplantation.

Objective: To illustrate a posttransplant lymphoproliferative lymphoma presenting as a solitary osseous lesion situated in the rib.

Clinical Features: A 53-year-old man was referred to a surgical department because of persistent local pain over the lower part of his left posterior hemithorax. Due to a previous history of chronic glomerulonephritis, a renal transplant was performed 7 years previously, followed by immunosuppressive therapy with azathioprine cyclophosphamide.