Pneumocystis carinii Pneumonia in Renal-Transplant Recipients Treated with Cyclosporine and Steroids

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Abstract
Fourteen of 156 renal-transplant recipients treated with cyclosporine and steroids developed Pneumocystis carinii-related pneumonia (PCP) over a 19-month period. This was a significant change from past experience with this disease in renal-transplant patients receiving azathioprine and steroids (six cases among 179 patients from 1977 to 1981). Epidemiological investigation failed to implicate either person-to-person or nosocomial spread of infection. Cases of PCP occurred more frequently in males. Twelve patients (86%) had onset of disease in the third or fourth months after transplantation. Comparison of cases to matched controls revealed that the cases had received lower doses of steroids and had a higher incidence of cytomegalovirus infection. This suggested that the cases may have been more effectively immunosuppressed than the controls. After institution of prophylaxis with trimethoprim-sulfamethoxazole, no further cases of PCP developed.