Abstract
Objective: The mode of progression in patients with prostate cancer with metastasis to nonregional lymph nodes was examined in order to know whether the site of metastasis effects the prognosis of prostate cancer. Methods: From 1986 to 1995 at the Chiba University Hospital, 205 cases of prostatic cancer with distant metastases were experienced. In 17 of them, nonregional lymph node metastases were observed at the diagnosis, of whom 10 also had bone metastases. Results: There was no statistical difference in prognosis between 17 patients with nonregional lymph node metastases and remaining 188 patients with metastatic prostate cancer. In all patients metastasized to nonregional lymph nodes, serum prostate-specific antigen and/or prostatic acid phosphatase levels were elevated. Anti-androgen therapy was effective in 15 cases and 5-year survival rate was 45.8%. Patients without bone metastases at the initial diagnosis could survive longer than those with metastases to bone (p < 0.05). Conclusions: From these observations, endocrine therapy was effective even in patients with distant lymph node metastases.
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