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前列腺癌是男性老年肿瘤,它在美国的发病率和死亡率分别占男性癌肿发病率和死亡率的第二位和第三位。东方国家前列腺癌发病率较低,但随着生活水平的提高,平均年龄增长,其发病率有升高趋势。前列腺癌的发生与发展具有三点特性: 1.肿瘤生长缓慢,只有不到1％的癌细胞处于细胞周期的S期。 2.肿瘤体积与组织分化类型相关,肿瘤体积大,组织分化程度低,体积小于1cm~3的前列腺癌多为高分化癌。
Prostate cancer is a male cancer of the elderly, its incidence and mortality in the United States accounted for the second and third of the incidence of male cancer and mortality, respectively. The incidence of prostate cancer in the eastern countries is low, but with the improvement of living standards, the average age, the incidence has increased. The occurrence and development of prostate cancer has three characteristics: 1. Tumor growth is slow, less than 1% of cancer cells in the S phase of the cell cycle. 2. Tumor volume and tissue type of differentiation related to large tumor size, low degree of tissue differentiation, the volume of less than 1cm ~ 3 of prostate cancer are mostly well-differentiated cancer.