Trimethoprim with sulfamethoxazole for treatment of infection with Pneumocystis carinii in renal insufficiency.

Pneumonia due to Pneumocystis carinii developed in an immunosuppressed patient with a renal transplant who had substantial renal failure. Successful treatment was acheived with administration of trimethoprim plus sulfamethoxazole at a dosage adjusted to the degree of renal failure. There were no significant adverse effects from this therapy.