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世界卫生组织(WHO)、世界手术节育联盟等国际组织,在通过大量研究和流行病学调查后确认,输精管结扎术是安全有效的节育措施,为之专门编发了手术指南向各国推荐。因此,输精管绝育术已被愈来愈多的国家纳入有组织的计划生育规划。全世界已有5千万男子实行了输精管绝育术,而我国约占1/2。然而,近年来有学者提出输精管结扎术可能增加前列腺癌与睾丸癌的发病风险,引起WHO的高度重视,在1991年10月召集了10个国家的23位专家举行专门会议。这些专家广泛地复习了现有的资料后认为两者之间的关系是不易确定的,但仍担心有轻度危险性存在,建议对该领域作进一步的研究。1993年2月,美国医学杂志刊出两篇论文,一篇是前瞻性的,另一篇是回顾性的,以不同于以往的病例对照作研究,分别随访了4～5年和13年。研究结果表明,输精管结扎后,前列腺癌发病率的相
International organizations such as the World Health Organization (WHO) and the World Federation of Surgical Oncology (IUU) have confirmed through extensive research and epidemiological investigations that vasectomy is a safe and effective method of birth control and has specially recommended surgical guidelines for them. Therefore, vasectomy has been included in more and more countries in the organization of family planning programs. Fifty million men worldwide have practiced vas deferens sterilization, while our country accounts for about one-half. However, in recent years, some scholars have suggested that vasectomy may increase the risk of prostate cancer and testicular cancer, arousing great attention from WHO. In October 1991, 23 experts from 10 countries convened a special meeting. After extensive review of available information, the experts concluded that the relationship between the two was not easily ascertainable, but still worried about the existence of a mild risk and suggested further study in this area. In February 1993, the American Medical Journal published two papers, one is prospective and the other retrospective, with a different case control from the previous study, were followed up for 4 to 5 years and 13 years. The results show that after vasectomy, the incidence of prostate cancer in the phase