Objective To assess the anal sphincteric function after intersphincteric resection for low rectal cancer by vectorial manometry. Methods Maximal anal pressure, vector volume, vector symmetric index and rectal anal inhibitory reflex were assessed in 16 patients underwent intersphincteric resection for low rectal cancer from 1999 to 2006. Thirty patients with low anterior resection for rectal cancer and another 30 healthy individuals were selected as control. Results The patients in intersphincteric resection group were subdivided into soiling group and defecation function good group. Maximal pressure, vector volume and vector symmetric index of the patients in soiling group and defecation function good group were significantly lower than those of the healthy and low anterior resection controls (P＜0.001). The maximal systole pressure, systole vector volume and vector symmetric index in soiling group were significantly lower than those in function good group (P＜0.001). The 25.0% patients in intersphincteric resection group had rectal anal inhibitory reflex， was significantly lower than that of the low anterior resection control group (93.3%, P＜0.001). Conclusion The maximal pressure and vector volume are compromised in patients underwent intersphincteric resection . The vectorial manometry can be an objective comprehensive tool for the evaluation of anal sphincter function in patients with intersphincteric resection.
目的探讨用肛门支撑吻合管支撑捆扎法进行回肠囊袋（Pouch）直肠肌鞘内肛管一期吻合术,并分析该术式对结、直肠息肉病、溃疡性结肠炎治疗的价值。方法对结、直肠息肉病行全结肠及上段直肠切除，保留齿状线上 4～6 cm直肠。距齿状线处 2 cm剥离直肠粘膜。回肠“J”型 、“S”型、“W”型Pouch内置入肛门支撑吻合管 8 cm，结扎、缝扎、固定。距直肠粘膜残端 1 cm处用2号肠线全层内荷包缝合一周，在直肠肌鞘套内回肠Pouch与外科肛管吻合。溃疡性结肠炎直肠肌鞘内与解剖肛管吻合。结果一期完成手术，吻合口愈合良好。无肌间血肿，无吻合口漏及吻合口狭窄。术后6个月排便功能优良率达88.8%，随访1～5年未发现息肉复发。结论全结肠及部分直肠切除后用支撑捆扎法行一期手术即可完成回肠Pouch直肠肌鞘内肛管吻合术。保留肛管直肠移行区的回肠Pouch外科肛管吻合术优于回肠Pouch解剖肛管吻合术。
目的总结陈旧性会阴肛管缺损肛门不全失禁临床处理经验。方法回顾性分析我院1994年1月至2000年1月收治的7例陈旧性会阴肛管缺损肛门不全失禁患者的临床资料。结果7例患者均行手术治疗，术后全部随访，无一例复发。结论对于陈旧性会阴肛管缺损肛门不全失禁患者，明确找到断裂的外括约肌断端是手术成败的关键。
ObjectiveTo study the advance of malignant anorectal melanoma. MethodsThe literature in recent years about risk factors,clinical characteristic,early diagnosis,treatment and the prognosis of the anorectal melanoma were reviewed.ResultsMalignant anorectal melanoma was very rare.The history of pigment naevus,human immunodeficiency virus infection and sunlight exposure might be the risk factors.Clinic characteristics were rectal bleeding,anorectal mass and changing in bowel habits.Early diagnosis mainly depended on performing routine examination on patients between the ages of 45-80 years.The staining for polycolnal CEA in anorectal melanoma has a role on diagnostic pathology.The treatment is controversial and the combined treatments of chemotherapy with radiation therapy and immunotherapy which were based on surgery (abdominoperineal resection or wide local excision) are introduced.Conclusion Early diagnosis of malignant anorectal melanoma is difficult and the prognosis is poor.It is necessary to pay more attention to this disease and the most successful therapeutic approaches need to be developed.
Objective To evaluate the clinical appliance and significance of the technique of anorectal manometry. Methdos Different ways of anorectal manometry, domain of its appliance and its clinical appliance was summarized and reviewed. Results The technique of anorectal manometry not only has important value on the study of analrectal pathology and physiology, but also can be associated with other examinations to manage biofeedback therapy, diagnose all kinds of anorectal diseases and evaluate anorectal function. Conclusion Anorectal manometry is a safe, simple, harmless and impersonal examination technique. It is necessary in the examination of analrectal function, in the diagnosis and treatment of anolrectal diseases.
Objective To evaluate the impact of body mass index （BMI） on short-term outcomes after intersphi-ncteric resection （ISR） for rectal cancer and anal cancer. Methods One hundred and ninety-nine cases of rectal cancer and anal cancer who were treated in Department of Gastrointestinal Surgery of West China Hospital of Sichuan University from Jan. 2009 to Dec. 2011 were enrolled retrospectively，and these cases were divided into underweight group （n=23），normal group （n=114），and overweight group （n=62） according to BMI. Postoperative indexes in early rehabilitation and complication of 3 groups were studied and compared. Results On the recovery indexes after ISR in early stage，there were no significant differences on the duration of first flatus，first defecation，first oral intake，first ambulation，and hospital stay among 3 groups （P＞0.05）. On the tube management，there were no significant differences on the duration of pulling out nasogastric tube and urinary catheter （P＞0.05），but duration of pulling out drain was longer in normal group and over-weight group （P＜0.05）. There were no significant differences on the incidence of postoperative complications among the 3 groups （P＞0.05），including anastomotic leakage，anastomotic bleeding，perianal infection，ileus，gastric retention，urinary retention， septicemia，wound infection，and recto-vaginal fistula. Conclusions BMI has little impact on short-term outcomes after ISR. Obesity does not increase the incidence of common complications for patients after ISR and does not influence recovery indexes with proper postoperative managements.
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 assess the effectiveness of large-calibre (7.5#) transanal tube drainage and decompression on prevention from anastomotic leakage following anterior resection for rectal cancer. Methods Clinical data of 346 consecutive patients (M/F=1.39, age range 32-84 years, median age 58.5 years) undergone anterior resection for rectal cancer in this institute from January 2006 to December 2008 were analyzed retrospectively. Results The anastomotic leakage rate was 0 (0/185) and 5.59%(9/161) in patients with or without receiving large-calibre transanal tube drainage respectively. The anastomotic leakage rate was significantly decreased by large-calibre transanal tube drainage after anterior resection for rectal cancer (χ2=8.526, P=0.004). Eight cases of anastomotic leakage were treated conservatively and the other one required further surgical interventions. No perioperative death occurred in this series. Conclusion In this study, the large-calibre transanal tube drainage and decompression is effective in protecting rectal anastomosis and decreasing the rate of anastomotic leakage.
目的 探讨肛管拖出式双吻合器在超低位直肠癌保肛手术中的应用价值。方法 回顾性总结我院23例超低位直肠癌保肛手术的经验。结果 本组病例利用肛管拖出和双吻合器技术行超低位保肛术均获成功，术后发生吻合口漏1例（4.3%），切口感染2例（8.7%），术后局部复发2例（8.7%），无手术死亡。结论 肛管拖出式双吻合器技术行超低位保肛术是安全可靠的，它可以大大提高超低位直肠癌保肛手术的成功率。