Conclusion This modification of the Kraske transsacral posterior approach offers a good alternative of excision and anus preservation for the benign and selective malignant tumors of the mid-lower rectum in terms of technical ease efficacy safety and patient tolerance .

结论改良的经骶尾后入路 Kraske术为直肠中下 段 的 各种良性和选择性的恶性肿瘤的保肛手术提供了1个安全、有效、易操作和患者易耐受的手术方式。

Thus transsacral approach is an operation of choice for benign mid and low rectal lesions . In cases of malignant lesions it can be used in combination with transabdominal operation .

所有 病例 大便 控制 功能 良好， 无 肛门 失禁。结论：该手术作为良性直肠中下段病变的首选手术，对于恶性病变，该手术与开腹手术相结合，是彻底切除肿瘤和低位吻合较为理想的手术方式。

Methods : Translumbar ( transsacral ) centesis and continuous epidural block with 1 % lidocaine were performed .

方法：经腰（ 骶）部穿刺，1%利多卡因连续硬膜外腔阻滞法。

From sept 1994 to July 1996 transsacral resections were performed in 9 cases with mid and low rectal le-sions which included 4 rectal cancer 3 rectal villous adenoma 1 rectal leiomyosarcoma and 1 be-nign rectal stenosis .

1994年9月至1996年7月共施行此类手术9例，其中直肠癌4例，直肠绒毛状腺瘤3例，直肠 平滑肌肉瘤1例，直肠狭窄1例。