论文部分内容阅读
作者在本文中评价了影响肛门癌生物学特性的因素和治疗此病的现代方法。肛管解剖学大肠远端缺乏精确的界限。肛管的解剖学界限是大肠末端2 cm,范围是从齿状线延伸至肛管外缘。对于肛缘或肛周皮肤的界限有不少分歧。Beahrs等将发生于肛缘外侧而距肛门5 cm 范围内的病变称为肛周病变,亦有作者认为包括齿状线远端的所有病变。由于所报告的肛管和肛缘肿瘤病人的转移形式和存活率有明显差异,故这些不同的分界就成为一个重要问题。
In this article, the authors evaluate the factors that affect the biological characteristics of anal cancer and the modern methods of treating the disease. The anal anatomy of the distal large intestine lacks precise boundaries. The anatomical limit of the anal canal is 2 cm distal to the large intestine and extends from the dentate line to the outer edge of the anal canal. There are many differences in the boundaries of the anal or perianal skin. Beahrs et al. will occur on the outside of the anal margin and within 5 cm of the anus. The lesions are called perianal lesions. The authors also believe that all lesions including the distal part of the dentate line are involved. Because of the marked differences in the forms and survival rates of the reported anal and anal tumour patients, these different borders have become an important issue.