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We delineated patterns of tumor recurrence and developed guidelines for followup after nephron sparing surgery for sporadic renal cell carcinoma.

Before December 1994, 327 patients underwent nephron sparing surgery for sporadic localized renal cell carcinoma at our clinic. Mean postoperative followup was 55.6 months. The course and outcome for patients with postoperative recurrent renal cell carcinoma were reviewed in detail.

Renal cell carcinoma recurred after nephron sparing surgery in 38 patients (11.6%), including 13 (4.0%) who had local tumor recurrence with (7) or without (6) metastatic disease and 25 (7.6%) who had metastatic disease without local tumor recurrence. Recurrent renal cell carcinoma was detected by associated symptoms in 25 patients and by a followup chest x-ray or abdominal computerized tomography (CT) in 13. The respective incidences of …