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Kaposi's sarcoma in an immunosuppressed renal allograft recipient.

A 47-year-old White man developed a buccal Kaposi's sarcoma 15 months after receiving a renal allograft. Atypical clinical and histological features were noted. A previous viral infection might have played a role in the occurrence of this patient's tumour but other possibilities of tumour induction in the immunosuppressed host are discussed. Although the condition is lethal when diagnosed after renal transplantation, this case report demonstrates that prompt diagnosis and radiotherapy may result in permanent cure.