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在美国恶性肿瘤中,大肠癌患者(包括结肠和直肠)仅次于皮肤癌。1974年估计有10万新病例,以及四万八千人死于该病。在每10万名病人中有19例男性病人死亡。近三十年来,上述统计情况没有什么变化。它仅次于肺癌的死亡。手术时发现几乎有30—68%的大肠癌患者已有局部淋巴结的转移。在15—61%的病人中已有静脉转移,这些现象与以后病人因转移而死亡之间有非常密切的关系,而肝脏和肺脏是大肠癌最常见的转移部位,其次为骨骼、脑、肾上腺、肾脏,以及移植到腹膜和腹部伤口也是屡见不鲜的。
In the United States, colorectal cancer patients (including the colon and rectum) are second only to skin cancer. There were an estimated 100,000 new cases in 1974, and 48,000 people died of the disease. Of the 100,000 patients, 19 male patients died. In the past 30 years, the above statistics have not changed. It is second only to the death of lung cancer. During surgery, almost 30-68% of colorectal cancer patients had local lymph node metastases. In 15-61% of patients, there has been venous metastasis. These phenomena are closely related to the later death of patients due to metastases. Liver and lungs are the most common metastatic sites of colorectal cancer, followed by bones, brain, and adrenal glands. Kidneys, and transplants to the peritoneal and abdominal wounds are also common.