[Long-term prognosis of incidental renal cell carcinoma--clinical analysis of renal cell carcinoma detected by our health checkup].

Purpose: We retrospectively evaluated the characteristics and long-term prognosis of incidentally detected renal cell carcinoma by health checkup.

Materials And Methods: From January 1987 to December 2005, 556 patients were treated for renal cell carcinoma in our department. Among them, 56 patients were detected by abdominal ultrasonography in health checkup of our health care center.

Natural history of small renal cell carcinoma: evaluation of growth rate, histological grade, cell proliferation and apoptosis.

Purpose: We investigated the natural history of incidentally discovered small renal cell carcinomas (RCCs), and we evaluated growth rate, apoptosis, cell proliferation and histological grade.

Materials And Methods: A total of 18 patients with RCCs extirpated after at least 12 months of observation were reviewed retrospectively. The period of observation ranged from 12 to 63 months (median 22.