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.
Objective To compare the effects of double stapling technique （DST） and single stapling technique （SST） in the low or ultralow anterior rectal resection and colon-anal canal anastomosis for patients with rectal cancer. Methods The clinical data of 351 patients with rectal caner， who were treated with low or ultralow anterior resection and colon-anal canal anastomosis in West China Hospital from Jan. 2009 to Dec. 2010， were collected and analyzed retrospectively. Operative and postoperative indexes of patients treated with DST （n=302） and SST （n=49） were compared. Results Compared with DST group， the distance from the dentate line to the edge of tumor， the length of the distal surgical margin 〔（1.83±0.59） cm vs. （2.07±0.56） cm〕， and hospitalization cost 〔（24 350.48±7 812.73） yuan vs.（29 455.32±7 869.33） yuan〕 of SST group were shorter or lower （P＜0.05）， but operative time was longer 〔（112.86±39.29） min vs. （100.10±36.75） min， P＜0.05〕. There were no significant differences on blood loss， duration of firstambulation， duration of first passing flatus， duration of first bowel movement， duration of pulling out nasogastric tube， duration of pulling out urinary catheter， duration of pulling out drain， postoperative hospital stay， total length of hospital stay， and the incidence of complication between the 2 groups （P＞0.05）. All patients were in functional recovery of anal control after operation. All patients were followed-up for 6-24 months （average 16 months）. During the followed-up， only 1 case suffered local tumor recurrence （SST group）， 3 cases suffered distant metastases （all in DST group）， and 15 cases （4.27％） died， of which 13 cases （4.30％） in DST group and 2 cases （4.08％） in SST group. Conclusions As in the low or ultralow anterior rectal resection and colon-anal canal anastomosis for patients with rectal cancer， SST results in shorter distal surgical margin than DST， so SST is suitable for the patients with shorter distance from the dentate line to the edge of tumor. What’s more， it saves the hospitalization cost effectively.
Objective To discuss the clinical outcome of fast-track surgery for low/super-low rectal cancer. Methods Between October 2007 and December 2008, 120 patients underwent low/super-low rectal cancer resection without formation of stoma in the West China Hospital were analyzed retrospectively. Postoperative early rehabilitations were compared between fast-track group and traditional group. Results In early rehabilitations, time of first passing flatus, ambulation, oral intake, and pulling out urinary catheter and the hospital stay in fast-track group were significantly earlier than those in traditional group （Plt;0.05）, while there was no significant difference in time of using nasogastric tubes or drains （Pgt;0.05）. There was also no significant difference in postoperative morbidity of complications between the 2 groups （Pgt;0.05）. Conclusion Fast-track surgery for low/super-low rectal cancer is safe and can accelerate recovery with decreased length of hospital stay.
ObjectiveTo summarize the causes, clinical manifestations, diagnosis and treatment methods for the intestinoseminal vesicle fistula. MethodLiteratures about intestinoseminal vesicle fistula at home and abroad were retrieved, the causes, clinical manifestations, diagnosis and treatment methods were analyzed. ResultsThe clinical reports of 19 patients with intestinoseminal vesicle fistula were searched.The intestinoseminal vesicle fistula occurred after the rectal low anterior resection with stomal leak, sigmoid diverticulum, inflammatory bowel disease, prostatectomy or radiotherapy.The main clinical symptoms were pneumaturia, fecaluria, fever, scrotal swelling and pain, orchitis, epididymitis and so on.Imaging methods such as enhanced CT or CT with rectal contrast and so on could confirm the diagnosis.The conservative treatment such as indwelling catheter, antibiotics, parenteral nutrition, and the operation methods such as sinus incision and drainage, mucosa/skeletal muscle flap repairment, urine/stool bypass could cure majority of cases. ConclusionsThe intestinoseminal vesicle fistula is a rare and independent disease.Through the discussion of the intestinoseminal vesicle fistula, it could improve the knowledge, and avoid misdiagnosis and mistreatment of the intestinoseminal vesicle fistula.
ObjectiveThe low anterior resection syndrome (LARS) score is a simple and visual instrument assessing sphincter preserving surgery for low rectal cancer. The purpose of this study is to analyze the feasibility of using LARS score to assess the function after intersphincteric resection for low rectal cancer. MethodsBetween March 2013 and June 2015, 76 patients underwent sphincter preserving surgery for low rectal cancer, 23 cases underwent intersphincteric resection set as ISR group, the other 53 cases received low anterior resection set as LAR group. LARS score, Saito function questionnaire, Wexner score, and European organization for research and treatment of cancer (EORTC) quality of life questionnaire core 30 (QLQ-C30), questionnaire module for colorectal cancer (QLQ-CR29) were compared for the two groups. ResultsThere were 63.2 percent patients (48/76) appeared major LARS, 27.6 percent (21/76) minor LARS and 9.2 percent (7/76) no LARS, there were no statistically difference between the ISR and LAR groups (P=0.727), but the item of incontinence due to liquid stools appeared more obvious in ISR group (P=0.009). The items of faecel incontinence and sore skin for EORTC QLQ-CR29 were serious in ISR group (P < 0.05), the other item of EORTC QLQ-CR29 and EORTC QLQ-C30, Saito function questionnaire, Wexner score were similar between the two groups (all P > 0.05). ConclusionThe anal function after intersphincteric resection is non-inferior to the low anterior resection for low rectal cancer, but both can appear serious low anterior resection syndrome.
ObjectiveTo systematically review the risk prediction models for the occurrence of low anterior resection syndrome in patients with rectal cancer after surgery. MethodsThe PubMed, Web of Science, Embase, Cochrane Library, Scopus, CINHAL, CNKI, CBM, WanFang Data and VIP databases were electronically searched to collect studies related to the objectives from inception to June 13, 2023. Two reviewers independently screened the literature, extracted data using the critical appraisal and data extraction for systematic reviews of prediction modelling studies (CHARMS) checklist, and assessed quality of the included studies using prediction model risk of bias assessment tool (PROBAST). ResultsA total of 14 studies were included, all studies reported model discrimination, and 10 studies reported calibration. The models were internally validated in 8 studies, externally validated in 5 studies. The most common predictors included in the models were tumour distance from the anal verge, neoadjuvant therapy, anastomotic leak and BMI. Only 5 studies had good overall applicability, and all studies had a high risk of bias, with the risk of bias mainly stemming from the field of participants, outcomes and analysis. ConclusionThere are still many shortcomings in the risk prediction models for the occurrence of low anterior resection syndrome in patients with rectal cancer after surgery. Future studies may consider external validation and recalibration of existing models. New prediction models should be built and validated according to methodological guidelines.