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乳腺为人体内成对的器官,受同样内外环境及致癌因素的影响,双侧乳腺可同时或先后患病。原发性双侧乳腺癌是指双侧乳腺同时或先后发生的独立的原发癌灶。目前多数文献[1]以6个月为间隔时间,小于6个月者称为原发性同时性双侧乳腺癌,大于6个月者为原发性异时性双侧乳腺癌。原发性双侧乳腺癌的患病率国内外报道不一致,国外资料显示,双侧乳腺癌的发病率1%~15%[2-4],国内报道较低,在2.1%以下,近年来有上升趋势。原发性双侧乳腺癌的发病率低,新鲜的癌组织不易长
Breast is a pair of organs in the human body, by the same internal and external environment and the impact of carcinogenic factors, both sides of the breast at the same time or successively sick. Primary bilateral breast cancer refers to both sides of the breast at the same time or occurred in an independent primary foci. At present, most of the literature [1] at 6 months intervals, less than 6 months are called primary synchronous bilateral breast cancer, more than 6 months were primary heterogenous breast cancer. The prevalence of primary bilateral breast cancer reported inconsistently at home and abroad, foreign data show that the incidence of bilateral breast cancer 1% to 15% [2-4], the domestic coverage is low, below 2.1% in recent years There is an upward trend. The incidence of primary bilateral breast cancer is low, fresh cancer is not easy to grow