Cancer incidence in a kidney-transplanted population.

The cancer incidence in all Finnish kidney-transplant recipients up to 1991 was studied. In 2090 patients 94 cancers were diagnosed, with a calculated incidence of 14.2% at 15 years' follow-up. The standardised incidence rate (SIR) compared with the entire Finnish population was 2.7, and it remained stable throughout the follow-up period. The SIR for skin cancer was 20, for thyroid cancer 11, and for kidney cancer, non Hodgkin lymphomas, cancer of the colon, bladder and female genital organs, 7, 6, 5, 4 and 3 respectively.