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结直肠癌是常见恶性肿瘤之一。流行病学资料显示,2000年全世界有70万人患结直肠癌,占全部癌症新发病例数的9.4%;50万人死于结直肠癌,占癌症死亡数的7.9%。在过去的20多年中,结直肠癌的发病数和死亡数在世界大多数国家和地区都呈上升趋势。目前,结直肠癌已成为全球第三大癌症。尽管肿瘤自身可以引起组织器官的功能衰竭甚至死亡,但大部分死因还是源于肿瘤的转移。结直肠癌多转移至肝脏,其次是肺、骨、脑等部位。骨
Colorectal cancer is one of the common malignant tumors. Epidemiological data show that in 2000, 700,000 people in the world had colorectal cancer, accounting for 9.4% of all new cases of cancer; 500,000 people died of colorectal cancer, accounting for 7.9% of cancer deaths. In the past 20 years, the number of colorectal cancer and deaths in most countries and regions in the world are on the rise. At present, colorectal cancer has become the world’s third largest cancer. Although the tumor itself can cause failure or even death of tissue and organ, most of the cause of death is due to tumor metastasis. Colorectal cancer metastasized to the liver, followed by lung, bone, brain and other parts. bone