依据美国癌症联合会解剖学分期科学制订低位直肠癌手术方案

Anatomy-based staging of the American Joint Committee on Cancer for scientific surgical planning of low rectal cancer

与中、高位直肠癌比较，低位直肠癌术后肿瘤局部复发率更高。其中低位直肠独特的解剖和缺乏可明确界定的解剖层面是患者预后不佳的重要原因。术前准确对低位直肠癌进行临床分期是外科医师制订最佳治疗方式的前提。合理利用影像学检查方法，术前准确判断低位直肠癌分期、规划可行的手术层面并选择适宜的手术方式，对提高R0切除率尤为重要，并将成为改善患者术后生命质量和远期生存的保证。

Compared with patients with high middle rectal cancer, local recurrent rate of low rectal cancer in patients is worse. The poor outcome of low rectal cancer is due to the unique anatomical features of the low rectum and the lack of clearly defined anatomical excision planes. Therefore, how to use the appropriate imaging methods, evaluate accurately preoperative cancer staging, plan feasible surgical plane and select the appropriate surgical approach, these will be very important for radical resection of rectal cancer. Therefore, the quality of life and longterm survival of the patients will be improved.