[Enucleation performed to treat renal cell carcinoma associated with chronic nephritis: a case report].

We performed enucleation on a patient with renal cell carcinoma associated with nephritis to preserve renal function. The patient was a 40-year-old man diagnosed with chronic nephritis. Ultrasonography performed during brief hospitalization for a check-up revealed a tumor in the left kidney. Enucleation was performed to treat stage 1 renal cell carcinoma. Pathological study revealed that the patient had IgA nephropathy and grade 1 clear cell carcinoma.