[Pelvic lymph node involvement in primary bladder cancer. A clinicopathological study of radical cystectomies].

Between 1984 and 1992, 131 patients with bladder cancer underwent radical cystectomy and pelvic lymph node dissection with urinary diversion. There were 110 male and 21 female patients, aged between 35 and 86 with a mean of 64 years. The follow-up period ranged from 1 month to 113 months, with a median of 34 months. The five-year survival estimated by the Kaplan-Meier method was 66.9% over all 131 patients. The five-year survival rates were 83.3% for stage pTis patients, 66.7% for stage pTa, 97.0% for pT1, 70.7% for pT2, 47.9% for pT3a, 26.2% for pT3b, and four-year survival was 25% for pT4 disease. Under the grading system, the five-year survival was 80.0% for cases of grade 2 disease and 63.6% for grade 3. There were two grade 1 patients who died of other diseases 15 and 16 months after surgery. Of all 131 patients, 22 (16.8%) had lymph node involvement. The five-year survival was 34.5% for patients with positive lymph nodes in comparison with 73.8% for those without lymph node involvement. The frequency of lymph node involvement was 26.1% in the non TCC group and 14.8% in the TCC group including 23.7% of the grade 3 and 4.3% of the grade 2 cases. Pathologically, the patients with higher stages had a higher frequency of lymph node involvement, and there was a significant difference in the frequency between pT3a (14.3%) and pT3b (47.8%) disease. The five-year survival of patients with positive lymph nodes was 40.0% for pN1, 32.1% for pN2 disease.(ABSTRACT TRUNCATED AT 250 WORDS)