目的:探讨保留肛门外括约肌低位直肠癌保肛手术的应用。方法: 在全直肠系膜切除的基础上,应用国产一次性管状吻合器,对32例低位直肠癌行保留肛门外括约肌超低位结肛吻合,随访12～36个月。回顾性分析其根治性、术后排便功能、手术并发症、局部复发率。结果: 全组病例术后病理检查无切端癌残留,无大便失禁,无吻合口漏;全组无手术死亡;肿瘤局部复发率9.4%(3/32)。结论: 低位直肠癌保留肛门外括约肌保肛手术,遵循肿瘤根治的原则下,能保留患者正常的肛门排便功能,明显改善该类患者的生活质量。
Objective To compare the outcomes of low/ultra-low anterior rectal resection and valgus resection in elder patients with rectal or anal cancer. Methods The clinical data of 184 patients with rectal or anal cancer， who were treated with extreme sphincter preserving surgery in West China Hospital from January 2009 to December 2011， were collected and analyzed retrospectively. The intraoperative and postoperative indexes between low/ultra-low anterior rectal resection group and valgus resection group were compared. Results ①There were no significant differences in the age，body mass index， gender， diameter of tumor， TNM stage， degree of differentiation， histological type， gross type， and complications before operation， such as hypertension， chronic obstructive pulmonary disease， cardiovascular diseases， diabetes， renal disease， and hypoproteinemia in two groups （P＞0.05）. ②Compared with the low/ultra-low anterior rectal resection group， the distance from the anal verge to the tumor was shorter （P＜0.05） and the distance of distal resec-tion margin of tumor was longer （P＜0.05） in the valgus resection group. ③There were no significant differences in the operation time， blood loss， ASA grade， and the postoperative complications in two groups （P＞0.05）. ④There were no significant differences in the duration of pulling out nasogastric tube， urinary catheter， and drainage tube， the duration of first passing flatus， first defecation， first oral intake， and first ambulation， and hospitalization cost （P＞0.05）. But the postoperative hospital stay and total hospital stay in the valgus resection group were significantly longer than those in the low/ultra-low anterior rectal resection group （P＜0.05）. ⑤All the patients were followed-up for 6-24 months （average 13 months）. During the following-up， only 1 case suffered local tumor recurrence in the valgus resection group. One case suffered distant metastases in the ultra-low anterior rectal resection and valgus resection group， respectively. Eight cases （4.35%） died， of which 4 cases （4.04%） in the low/ultra-low anterior rectal group and 4 cases （4.71%） in the valgus resection group. All the patients were in functional recovery of anal control after operation. Conclusions As the extreme sphincter preserving surgery for elder patients with rectal or anal cancer， the low or ultra-low anterior rectal resection and valgus resection could both be used for elder patients with extreme-low rectal or anal cancer. However， valgus resection results in longer distal surgical margin than that low/ultra-low anterior rectal resection， and it is suitable for the patients with shorter distances from the anal verge to the tumor.
目的 评价超低位直肠癌保肛手术的安全性和疗效。方法 回顾性分析笔者所在医院2004年10月至2010年12月期间收治的48例行管扎式结肠肛管吻合术的超低位直肠癌患者的临床资料。结果 48例患者手术均获成功，手术时间120～221min，（178±37） min； 术中出血量70～210mL，（167±38） mL； 术后排气时间2～5d，（3.1±1.2） d； 术后排便时间8～11d，（9.1±1.4） d。保留完整齿状线者27例，保留齿状线≥1/2者14例，保留齿状线＜1/2者7例。所有患者均获随访，随访时间1～7年，平均32个月。术后有3例患者发生吻合口狭窄，无吻合口漏发生。术后1年有25例患者的肛门括约肌功能达优，其中保留完整齿状线者18例，保留齿状线≥1/2者7例； 良好16例，其中保留完整齿状线者9例，保留齿状线≥1/2者7例； 一般7例，均为保留齿状线＜1/2的患者，优良率为85.4%（41/48）。随访期间，2例患者分别于术后9个月和13个月直肠癌局部复发，其中1例于术后23个月死亡。结论 超低位直肠癌保肛手术是一种安全的、可行的手术方式，可以在根治的前提下达到保肛的目的。
Objective To investigate the safety and feasibility of the total mesorectal excision （TME） and intersphincteric resection （ISR） for ultra-low rectal cancer and anal sphincter preservation surgery for anorectal cancer， and to evaluate the short term efficacy and postoperative anal function. Methods A retrospective analysis of clinical and follow-up data of 86 cases with TME＋ISR for ultra-low rectal cancer and anorectal cancer from January 2009 to December 2010 in West China Hospital of Sichuan University were performed. Results Eighty-six patients were successfully performed the operation， the lower edge of tumor from the anus was 1-5 cm （average 1.63cm）； tumor diameter was 2-7 cm （average 3.4cm）. The tumors were high differentiation in 4 cases， moderately differentiation in 60 cases，and poorly differentiation in 22 cases. The pTNM stages were stageⅠin 12 cases， stageⅡA in 11 cases， stage ⅡB in 15 cases， stage ⅢA in 2 cases， stage ⅢB in 23 cases， stage ⅢC in 16 cases， and stage Ⅳ in 7 cases. There were postoperative anastomotic leakage in 3 cases， perianal infection in 2 cases （1 case received reoperation with permanent colostomy because of pelvic peritoneal infection caused by perianal severe infections）. Anastomotic bleeding and anastomotic stenosis were of 2 cases respectively. Rectovaginal fistula， inflammatory ileus， urinary retention， and abdominal infection were of 1 case respectively. Eighty-six patients were followed-up for 12-24 months， the mean time was 18 months. Liver metastases was found in 1 case in 7 months after operation， 2 cases dead in the 7th month and 12th month after operation respectively. Local recurrence were found in 3 cases （3.5%） in 1 year after operation. The survival rate of 1-year was 97.7% （84/86）. The times of defecation was 1-5 times a day. The Kirwan’s score level on function of control defecation was 1-2 grade. Conclusions TME＋ISR for low rectal cancer and anorectal cancer is a viable， safe， and radical operation type for preservation of anus. The short term efficacy is satisfactory.
Objective To compare the long-term outcomes between laparoscopic and open sphinter preservation operation for low rectal cancer. Method The literatures about the long-term outcomes between laparoscopic and open sphinter preservation operation for low rectal cancer were reviewed. Result Compared with open sphinter preservation operation, laparoscopic sphincter preservation operation for low rectal cancer did not increase locoreginonal recurrence rate and metasatasis rate. Conclusion The safety, efficacy, and long-term outcomes remain to be determined by more randomized clinical tirals and evidence-based medical results.