经肛管局部切除手术可洽愈早期良肠癌，如无区域远处转移的壁层内直肠癌（T_1或T_2N_0M_0），不一定都需作低位前切除或经腹会阴切除术。经直肠腔内超声扫描（TRUS）可以正确判断早期宜肠癌的浸润深度（T期），作者对1990～1992年收治的62例早期直肠癌病例进行TRUS的T分期，病人置于左侧卧位，取 Acuson 128扫描仪，将 7MHZ直线和横面 Anterior local resection of the anal can be used to treat early colorectal cancer. If there is no regional distant metastasis of rectal cancer (T_1 or T_2N_0M_0), it is not always necessary to perform anterior low resection or transabdominal perineal resection. Transrectal ultrasound scanning (TRUS) can correctly determine the depth of invasion of early colorectal cancer (T phase). The authors performed TRUS staging of 62 cases of early rectal cancer admitted from 1990 to 1992. Bit, take Acuson 128 scanner, will be 7MHZ straight and horizontal