前列腺癌为老年病 ,极少在 5 0岁以前发病。随着人类平均寿命的延长和诊断技术的提高 ,前列腺癌的发病率在不断上升 ,我国也不例外。流行病学家推算 ,到 2 0 0 0年欧共体每年有 6 5岁以上前列腺癌患者92 0 0 0例 ,占男性新诊断癌的 12 % ;美国预期 1999年有前列腺癌患者 17930 Prostate cancer is a form of geriatric disease that seldom starts before the age of 50. With the extension of human life expectancy and diagnostic techniques, the incidence of prostate cancer is on the rise, our country is no exception. Epidemiologists estimate that by the year 2000 the European Community will have 92,000 cases of prostate cancer each year over 65 years old, accounting for 12% of newly diagnosed cancers in the United States; the United States is expected to have 179,309 cases of prostate cancer in 1999