Treatment of rectosigmoid endometriosis by laparoscopically assisted vaginal rectosigmoidectomy

Natural Orifice Specimen Extraction as a Promising Alternative for Minilaparotomy in Bowel Resection Due to Endometriosis: A Systematic Review and Meta-Analysis

OBJECTIVE

This study focuses on evaluating the effectiveness, safety and efficacy of 2 surgical tissue extraction methods for treating bowel endometriosis: natural orifice specimen extraction (NOSE) and minilaparotomy.

DATA SOURCES

A systematic search was conducted in MedLine, Embase, and Cochrane Library databases in October 2023, without date restrictions.

METHODS OF STUDY SELECTION

This study included studies that directly compared NOSE and minilaparotomy in colectomy patients due to endometriosis. Primary outcomes were defined as operation duration, length of hospital stay, intraoperative blood loss, and major postoperative complication rates. The Clavien-Dindo classification was used to categorize complications. Statistical analysis was performed using Review Manager Software by Cochrane, with a DerSimonian and Laird random-effects model to account for anticipated high heterogeneity. Subgroup analysis was conducted for patients undergoing full laparoscopic (L/S) resection.

TABULATION, INTEGRATION AND RESULTS

Out of 1236 identified studies, 6 met the inclusion criteria, comprising 372 patients. One study was a randomized controlled trial, and 5 were observational. Operation duration did not significantly differ between NOSE and minilaparotomy (MD: -10.85 min; 95% CI: [-23.33, 1.63]; p = .09). NOSE was associated with a significantly reduced length of hospital stay (MD: -0.76 day; 95% CI: [-1.21, -0.31]; p = .008). The major postoperative complication rates were 3.77% for NOSE and 5.55% for minilaparotomy, with no significant difference (OR: 0.84; 95% CI: [0.27, 2.60]; p = .76). Subgroup analysis revealed that Full L/S had significantly shorter operation duration (MD: -26.06 min; 95% CI: [-45.85, -6.27]; p = .01), reduced length of stay (MD: -0.75 day; 95% CI: [-1.25, -0.25]; p = .003), and lower blood loss (MD: -15.01 mL; 95% CI: [-29.64, -0.37]; p = .04).

CONCLUSION

NOSE emerged as a potentially safer alternative to minilaparotomy for tissue extraction in colectomy for bowel endometriosis. However, standardization of the procedure and additional randomized controlled trials are needed to validate these findings.

Feasibility and safety of transvaginal specimen extraction in deep endometriosis colorectal resectional surgery and analysis of risk factors for postoperative complications

BACKGROUND

The aim of the present study was to demonstrate that transvaginal specimen extraction is a feasible and safe approach in colorectal resection for deep endometriosis (DE) and to assess the risk factors for postoperative complications.

METHODS

This retrospective cohort study included all the consecutive patients undergoing segmental bowel resection for symptomatic endometriosis at "La Paz" University Hospital (Madrid, Spain) and at "Hospital General Universitario de Valencia" (Valencia, Spain) from January 2014 to December to 2017. Patients were grouped according to specimen extraction approach into those who had transvaginal extraction (Group I) and those who had suprapubic extraction (Group II). Clinic-demographical, surgical and post-surgical data were recorded. Intra- and postoperative complications were classified according to Clavien-Dindo criteria. Postoperative data were compared between groups. Risk factors associated with surgery were investigated.

RESULTS

Out of 99 female patients included (average age 36.91 ± 5.36 years), 23 patients (23.2%) had transvaginal and 76 (76.8%) had suprapubic specimen extraction. The groups were comparable regarding operative time, nodule size, level of anastomosis, hospital stay and intraoperative complications. We observed no statistically significant differences in postoperative complications and rectovaginal fistula rate between the groups. Binary logistic regression analyses determined that vaginal endometriosis is an independent risk factor for postoperative complications (OR: 2.63, 95% CI [1.10-6.48], p = 0.03).

CONCLUSIONS

Transvaginal specimen extraction is a safe and feasible technique in DE colorectal surgery and should be taken into consideration whenever vaginal endometriosis exists. Nevertheless, vaginal endometriosis can be an independent risk factor for postoperative complications in DE surgery.

Rates of anastomotic leak and fistula following surgical management of bowel endometriosis: a comparison of shaving, discoid excision, and segmental resection

Endometriosis is a complex chronic inflammatory condition that can create a multitude of bothersome painful symptoms for women. Bowel endometriosis is often misdiagnosed or overlooked leading to years of suffering for many women. The surgical management of bowel endometriosis varies based on extent of disease as well as surgeon experience. Surgical treatment for bowel endometriosis is complex and a variety of intraoperative and postoperative complications must be considered. Two significant postoperative complications for bowel endometriosis include anastomotic leak and fistula formation. There is continued debate regarding the appropriate surgical treatment for bowel endometriosis. Aggressive surgery with segmental bowel resection is being utilized more cautiously, with an increase in less aggressive shaving or disc excision techniques. Historic beliefs regarding the limitations of shaving and disc excision are being challenged, and with a reduction in morbidity these less aggressive techniques are winning favor among gynecologic surgeons. Shaving, discoid excision, and segmental bowel resection are all feasible surgical management options for bowel endometriosis. Segmental resection is associated with the highest rates of both anastomotic leak and fistula formation, while shaving is associated with the lowest.

Outcomes after rectosigmoid resection for endometriosis: a systematic literature review

PURPOSE

"Endometriosis" is defined such as the presence of endometrial glands and stroma outside the uterine cavity. This ectopic condition may develop as deeply infiltrating endometriosis (DIE) when a solid mass is located deeper than 5 mm underneath the peritoneum including the intestinal wall. The ideal surgical treatment is still under search, and treatment may range from simple shaving to rectal resection. The aim of the present systematic review is to report and analyze the postoperative outcomes after rectosigmoid resection for endometriosis.

METHODS

We performed a systematic review according to Meta-analysis of Observational Studies in Epidemiology guidelines. The search was carried out in the PubMed database, using the keywords: "rectal resection" AND "endometriosis" and "rectosigmoid resection" AND "endometriosis." The search revealed 380 papers of which 78 were fully analyzed.

RESULTS

Thirty-eight articles published between 1998 and 2017 were included. Three thousand seventy-nine patients (mean age 34.28 ± 2.46) were included. Laparoscopic approach was the most employed (90.3%) followed by the open one (7.9%) and the robotic one (1.7%). Overall operative time was 238.47 ± 66.82. Conversion rate was 2.7%. In more than 80% of cases, associated procedures were performed. Intraoperative complications were observed in 1% of cases. The overall postoperative complications rate was 18.5% (571 patients), and the most frequent complication was recto-vaginal fistula (74 patients, 2.4%). Postoperative mortality rate was 0.03% and mean hospital stay was 8.88 ± 3.71 days.

CONCLUSIONS

Despite the large and extremely various number of associated procedures, rectosigmoid resection is a feasible and safe technique to treat endometriosis.

Transcolonic Perirectal NOTES Access (PNA): A feasibility study with survival in swine model

Transrectal access still has some unsolved issues such as spatial orientation, infection, access and site closure. This study presents a simple technique to perform transcolonic access with survival in a swine model series. A new technique for NOTES perirectal access to perform retroperitoneoscopy, peritoneoscopy, liver and lymphnode biopsies was performed in 6 pigs, using Totally NOTES technique. The specimens were extracted transanally. The flexible endoscope was inserted through a posterior transmural incision and the retrorectal space. Cultures of bacteria were documented for the retroperitoneal space and intra abdominal cavity after 14 days. Rectal site was closed using non-absorbable sutures. There was no bowel cleansing, nor preoperative fasting. The procedures were performed in 6 pigs through transcolonic natural orifice access using available endoscopic flexible instruments. All animals survived 14 days without complications, and cultures were negative. Histopathologic examination of the rectal closure site showed adequate healing of suture line and no micro abscesses. The results of feasibility and safety of experimental Transcolonic NOTES potentially brings new frontiers and future wider applications for minimally invasive surgery. The treatment of colorectal, abdominal and retroperitoneal diseases through a flexible Perirectal NOTES Access (PNA) is a promising new approach.

Scarless hepatectomy: natural orifice specimen extraction after left lateral sectionectomy

BACKGROUND

The use of laparoscopy in liver surgery is well established and considered as the gold standard for small resections. The laparoscopic resections have lower morbidity and better cosmetic results, but still require an incision to remove the surgical specimen. The possibility of remove the specimen through natural orifices and avoid an abdominal incision may further improve the benefits offered by minimally invasive procedures.

AIM

To describe the technique of transvaginal extraction of the specimen after laparoscopic liver left lateral sectionectomy.

METHOD

The laparoscopic liver resection is performed in a standard fashion. After completing the resection, the specimen is placed into a retrieval plastic bag. To perform de extraction, a vaginal colpotomy is performed, guided by a 12 mm trocar introduced through the vagina. Then the extraction bag is removed pulling the bag through the extended incision in the posterior wall of the vagina. After the extraction, the colpotomy incision is closed laparoscopically.

RESULTS

This technique was performed in a 74-year-old woman with a 3 cm lesion between liver segments 2 and 3. She had a fast and uneventful recovery.

CONCLUSION

This technique appears to be feasible, safe and avoid the complications of an abdominal incision.

Laparoscopic natural orifice specimen extraction-colectomy: A systematic review

Over the last 20 years, laparoscopic colorectal surgery has shown equal efficacy for benign and malignant colorectal diseases when compared to open surgery. However, a laparoscopic approach reduces postoperative morbidity and shortens hospital stay. In the quest to optimize outcomes after laparoscopic colorectal surgery, reduction of access trauma could be a way to improve recovery. To date, one method to reduce access trauma is natural orifice specimen extraction (NOSE). NOSE aims to reduce access trauma in laparoscopic colorectal surgery. The specimen is delivered via a natural orifice and the anastomosis is created intracorporeally. Different methods are used to extract the specimen and to create a bowel anastomosis. Currently, specimens are delivered transcolonically, transrectally, transanally, or transvaginally. Each of these NOSE-procedures raises specific issues with regard to operative technique and application. The presumed benefits of NOSE-procedures are less pain, lower analgesia requirements, faster recovery, shorter hospital stay, better cosmetic results, and lower incisional hernia rates. Avoidance of extraction site laparotomy is the most important characteristic of NOSE. Concerns associated with the NOSE-technique include bacterial contamination of the peritoneal cavity, inflammatory response, and postoperative outcomes, including postoperative pain and the functional and oncologic outcomes. These issues need to be studied in prospective randomized controlled trials. The aim of this systematic review is to describe the role of NOSE in minimally invasive colorectal surgery.

"Down-to-Up" transanal NOTES Total mesorectal excision for rectal cancer: Preliminary series of 9 patients

BACKGROUND:

Applications for natural orifice translumenal endoscopic surgery (NOTES) to access the abdominal cavity have increased in recent years. Despite potential advantages of transanal and transcolonic NOTES for colorectal pathology, it has not been widely applied in the clinical setting. This study describes a series of nine patients for whom we performed transanal retrograde (“Down-to-Up”) total mesorectal excision for rectal cancer.

MATERIALS AND METHODS:

Under IRB approval, informed consent was obtained from each patient with rectal adenocarcinoma. Rectosigmoidectomy with total mesorectal excision was performed using low rectal translumenal access to the mesorectal fascia and subsequent dissection in a retrograde fashion. This was achieved using either a single port device or flexible colonoscope with endoscopic instrumentation and laparoscopic assistance. This was followed by transanal extraction of the specimen and hand-sewn anastomosis.

RESULTS:

Mean operative time was 311 min. Mean hospital stay was 7.56 days. Complications occurred in two patients, and consisted of one anastomotic leakage with reoperation and one intraoperative conversion to open surgery because of impossibility to dissect the specimen. TME specimen integrity was adequate in six patients.

CONCLUSION:

This series suggests that a retrograde mesorectal dissection via a NOTES technique is feasible in patients with rectal adenocarcinoma. This technique may act as a complimentary part of operative treatment for rectal cancer alongside other minimally invasive strategies. Long-term follow up will be needed to assess oncological results.

"Down-to-Up" transanal NOTES Total mesorectal excision for rectal cancer: Preliminary series of 9 patients

BACKGROUND

Applications for natural orifice translumenal endoscopic surgery (NOTES) to access the abdominal cavity have increased in recent years. Despite potential advantages of transanal and transcolonic NOTES for colorectal pathology, it has not been widely applied in the clinical setting. This study describes a series of nine patients for whom we performed transanal retrograde ("Down-to-Up") total mesorectal excision for rectal cancer.

MATERIALS AND METHODS

Under IRB approval, informed consent was obtained from each patient with rectal adenocarcinoma. Rectosigmoidectomy with total mesorectal excision was performed using low rectal translumenal access to the mesorectal fascia and subsequent dissection in a retrograde fashion. This was achieved using either a single port device or flexible colonoscope with endoscopic instrumentation and laparoscopic assistance. This was followed by transanal extraction of the specimen and hand-sewn anastomosis.

RESULTS

Mean operative time was 311 min. Mean hospital stay was 7.56 days. Complications occurred in two patients, and consisted of one anastomotic leakage with reoperation and one intraoperative conversion to open surgery because of impossibility to dissect the specimen. TME specimen integrity was adequate in six patients.

CONCLUSION

This series suggests that a retrograde mesorectal dissection via a NOTES technique is feasible in patients with rectal adenocarcinoma. This technique may act as a complimentary part of operative treatment for rectal cancer alongside other minimally invasive strategies. Long-term follow up will be needed to assess oncological results.

Totally laparoscopic intracorporeal anastomosis with natural orifice specimen extraction (NOSE) techniques, particularly suitable for bowel endometriosis

The objective of this retrospective study was to evaluate the feasibility of natural orifice specimen extraction (NOSE) techniques in 41 patients undergoing bowel resection for treatment of deep infiltrating endometriosis. In all patients laparoscopic treatment of rectovaginal endometriosis with bowel resection had been performed. In 32 patients the classic approach was adopted (group 1), and in 9 a NOSE technique was performed (group 2). Demographic, operative, and postoperative data were compared. Statistical analyses were performed using SPSS software, version 16.0. When needed, qualitative variables were compared using the χ(2) test or the Fisher exact test. Quantitative variables using the t-test were used. The threshold of statistical significance was set at p = .05. No statistically significant difference was observed between the 2 groups. Eight complications (19.5%) were observed, 2 minor (4.8%) and 6 major (14.6%). Of major complications, 2 were observed in the NOSE group (n = 2; 22.2%). It was concluded that the NOSE technique is a feasible approach in patients undergoing bowel resection for treatment of deep infiltrating endometriosis.

Systematic Review and Meta-analysis of Complications in Transvaginal Approach in Laparoscopic Surgery

Transvaginal access is the most popular natural orifice translumenal technique in the minimally invasive surgery. Reviews on non-gynecological transvaginal approach morbidities reveal that rates vary greatly. A systematic review of transvaginal approach in non-gynecological intraabdominal procedures was carried out to assess the risk of complications. A systematic search was conducted using MEDLINE, EMBASE, PubMed, and the Cochrane Library from the inception of these databases to March 2012. The following keywords were searched: "transvaginal", "NOTES", "single incision", and "single port". From the total of 231 potentially eligible abstracts, 87 papers were retrieved and evaluated as fulfilling the eligibility criteria. The final analysis included 32 articles. The overall complications rate was 4.4 %, and complications related to the transvaginal port reached 2.4 %. Conversion rate to open surgery was 3.4 %. The incidence of postoperative urinary tract infection was 0.8 %. The mean operative time was 119 min. The mean hospital stay was 3.1 days (range 6 h-12 days). The technique of transvaginal access can offer several advantages for a patient and is associated with an acceptable rate of complications.

Feasibility and first long-term results after laparoscopic rectal segment resection and vaginal specimen retrieval for deep infiltrating endometriosis

INTRODUCTION

Radical resection of deep infiltrating endometriosis (DIE), including bladder and bowel resection, provides relief from pain in symptomatic patients. The laparoscopic approach to treatment is well established for bowel resection but normally requires additional abdominal incisions for specimen retrieval. Here we describe our technique of laparoscopically assisted rectal resection and transvaginal specimen retrieval (LARRT) and provide follow-up information on pain scores and complications.

MATERIALS AND METHODS

Retrospective observational monocentric study on all DIE patients with rectal infiltration treated between 2008 and 2010 with LATRR at our department. Follow-up was obtained for at least 3 years, including baseline 1-year and 3-year pain scores.

RESULTS

We identified four patients undergoing LARRT available for follow-up. DIE was confirmed by histology in all cases. There were no intraoperative complications. Two patients had transient postoperative urinary retention, one patient developed recto-vaginal fistula and required transient colostomy. One patient suffered from persistent vaginal dryness. All patients, however, reported persistent pain relief, including at the end of follow-up period.

CONCLUSION

LARRT is a feasible variation of laparoscopic bowel resection for DIE with rectal infiltration. In our study it has promising results with respect to pain control. Larger studies will, however, be required to determine the safety of this procedure.

Cellular, histologic, and molecular changes associated with endometriosis and ovarian cancer

Our understanding of the pathogenesis of endometriosis is rapidly evolving as early molecular events are increasingly identified. Endometriosis is associated with increased risk of ovarian cancer and exhibits neoplastic phenotypes including invasion of stromal tissue and lymphatic spread to distant organs. This review of the literature establishes the clinical, epidemiologic, and pathologic correlation between endometriosis and low-grade ovarian cancer. Genetic studies have demonstrated that endometriotic lesions have mutations in genes directly related to neoplasms, in particular the p53, KRAS, PTEN, and ARID1A genes, which suggests a direct transition from a subset of endometriotic lesions to invasive carcinomas. The identification of both genetic and epigenetic biomarkers including microRNAs are essential for identifying patients at risk for the transition to neoplasia.

Safety of culdotomy as a surgical approach: implications for natural orifice transluminal endoscopic surgery

OBJECTIVE

To evaluate the efficacy and safety of culdotomy as a surgical approach to access the peritoneal cavity and discuss its implications for natural orifice transluminal endoscopic surgery (NOTES).

METHODS

A retrospective chart review of women undergoing culdotomy for tubal sterilization (N 219) between January 1995 and December 2005 was performed. The Accordion Grading System was used for the severity of complications.

RESULTS

No intraoperative complications were noted. Postoperative complications occurred in 7 patients (3.2%): 6 infections (grade 2) and 1 case of hemorrhage (grade 3). Conversion to laparoscopy was necessary in 10 patients (2.2%) due to anatomical constraints or pelvic adhesions; however, culdotomy with entry into the abdominal cavity was nevertheless successful in all 10 cases. The difference in the proportion with a history of pelvic surgery between the conversion and nonconversion groups was not statistically significant (P = .068). Patients with BMI ≥30 had a higher conversion rate compared to patients with BMI <30 (11.4% versus 1.5%, P = .011). Tubal sterilization via culdotomy was successfully performed in all 11 women with no prior vaginal deliveries.

CONCLUSION

Culdotomy appears to be a safe surgical approach to access the peritoneal cavity and is associated with a low complication rate. These data support the feasibility and safety of utilizing the cul-de-sac as an access portal for natural orifice transluminal endoscopic surgery.

Colorectal natural orifice transluminal endoscopic surgery (NOTES) and transvaginal/transrectal specimen extraction

Advancements in minimally invasive surgery have both revolutionized laparoscopy and set the stage for the advancement of endoscopic surgery to the forefront of modern medicine. Natural orifice transluminal endoscopic surgery (NOTES) has now become a subject of great interest to surgeons worldwide who wish to reduce the morbidity associated with abdominal operations. However, the application of NOTES to colorectal surgery has thus far been limited due to the complex dissection, anastomosis and specimen extraction typically required when operating on the large bowel. For this reason, laparoscopic-assisted natural orifice surgery has been the means by which most surgeons have begun to incorporate natural orifice surgery into their established practices. Transanal endoscopic surgery, transvaginal-assisted laparoscopy and transrectal specimen extraction are all emerging techniques that may be currently employed, in a hybrid manner, with traditionally accepted laparoscopic operations in order to transition toward less invasive surgery and even pure NOTES. To this end, the vagina appears to be the most practical and widely used site of specimen extraction and adjunct access site for laparoscopic hybrid operations. An accompanying video demonstrates the authors' preferred technique for transvaginal and transrectal specimen extraction.

Laparoscopic sigmoid resection with transrectal specimen extraction: a systematic review

AIM

A systematic review was performed to identify differences in surgical technique, postoperative morbidity, length of hospital stay and safety for procedures involving left-sided laparoscopic colectomy with natural orifice specimen extraction.

METHOD

A PubMed search was performed to retrieve studies reporting on left-sided laparoscopic colorectal resection with transrectal specimen extraction. The quality of the different reports was assessed according to the Newcastle-Ottawa Scale. Six studies were included and all but one were cohort studies. Studies on transanal, transvaginal or transcolonic specimen extraction were excluded, as were reports on paediatric surgery.

RESULTS

Six papers (including 94 patients) fulfilled the search criteria. The techniques reported were not standardized and this technical heterogeneity hampered pooled analysis. A meta-analysis could also not be performed because of differences in inter-study methods, study population and results. All studies showed, nevertheless, that the technique is feasible with low morbidity and short postoperative hospital stay. No anal dysfunction was reported.

CONCLUSION

To date, the evidence in favour of left-sided laparoscopic colectomy with transrectal specimen extraction is weak (level IV-V). Future clinical research should focus on standardization of the technique. Randomized controlled trials are necessary to show the superiority of this approach with regard to postoperative pain and morbidity, hospital stay, recovery, function and cosmesis.

[Perception of natural orifice surgery. Results of a survey of female physicians and nursing staff]

BACKGROUND

Natural orifice surgery (NOS) is now being elaborated with the aim to make abdominal surgery simpler and safer. In order to obtain women's perception of NOS and their willingness to consent to this type of approach a survey was conducted among female employees from surgical disciplines at the University Hospital Charité Berlin.

MATERIAL AND METHODS

A written description and information on minimally invasive surgery and the NOS concept were distributed among 500 female physicians and nursing staff along with a 14-item questionnaire. Of the staff members 118 participants completed the questionnaire anonymously. Data analysis was carried out using SPSS 16.0.

RESULTS

With regard to ovarectomy 55% of women surveyed indicated that they would prefer a transvaginal approach to standard laparoscopy (44%) or a transgastric approach (1%). When asked about preferred access for cholecystectomy only 31% would prefer the transvaginal method compared to 61% for the laparoscopic technique. Objections against the transvaginal access concerned the impact on a healthy sexual life and effects on fertility. Reasons for choosing NOS were no wound pain and no scar.

CONCLUSION

This survey shows that among the surveyed female medical employees the transvaginal approach is associated with concerns and fears but these are not justifiable, as the transvaginal access has been used for more than 100 years for gynecological purposes. There is a strong need for outcome data to enlighten female patients and to help guide physicians when talking to patients regarding NOS and the transvaginal approach.

Quality of life after segmental resection of the rectosigmoid by laparoscopy in patients with deep infiltrating endometriosis with bowel involvement

STUDY OBJECTIVE

To estimate the quality of life of patients undergoing laparoscopic resection of a segment of the rectosigmoid for the treatment of deep infiltrating endometriosis with bowel involvement.

DESIGN

Prospective application of the SF-36 Health Status Questionnaire to 151 women before and 1 year after surgical intervention (Canadian Task Force Design Classification II).

SETTING

Department of Obstetrics and Gynecology, University of São Paulo Medical School, and Samaritano Hospital, São Paulo, Brazil.

PATIENTS

A total of 151 women (mean age 34.05 ± 5.65 years) with deep infiltrating endometriosis underwent resection of a segment of the rectosigmoid by laparoscopy between 2002 to 2009.

INTERVENTIONS

All the patients had historical data collected and underwent clinical examination and transvaginal ultrasonography with prior bowel preparation for resection of a segment of the rectosigmoid by laparoscopy indicated for patients with symptoms (pelvic pain) with 1 or more lesions of more than 3 cm in length or multifocal lesions.

MEASUREMENTS AND MAIN RESULTS

Wilcoxon signed rank test verified differences between the degrees of the symptoms and the SF-36 scores before and 1 year after laparoscopic treatment. There was a significant improvement (p < .001) in all pain-related symptoms, as well as a significant increase (p < .001) in scores in all the SF-36 domains and in the sum of the components comprising both physical and mental health.

CONCLUSION

Laparoscopic segmental resection of the rectosigmoid fulfills its essential objective of treating endometriosis with bowel involvement and improving patients' QoL to a significant extent.

Perirectal NOTES access: "down-to-up" total mesorectal excision for rectal cancer

OBJECTIVES

Clinical natural orifice surgery has been applied for abdominal surgery in recent years, mostly by vaginal and oral access. The study describes preliminary successful human applications of transcolonic natural orifice transluminal endoscopic surgery (NOTES), using a new transrectal total mesorectal excision procedure for rectal cancer.

METHODS

Institutional review board approval was obtained for the study. In 2 patients with rectal adenocarcinoma, total mesorectal resection and rectosigmoidectomy with lymphadenectomy was performed using a low NOTES transcolonic access. "Down-to-up" mesorectal dissection was achieved either using a flexible scope or a transrectal single port device. The specimens were extracted transanally, and transorificial low anastomosis was performed.

RESULTS

Operative time was 350 and 360 minutes, respectively; no complications occurred and patients were discharged after 6 days.

CONCLUSION

Successful human reports on transcolonic NOTES suggest potential applications. The treatment of colorectal diseases through transorificial single port or flexible perirectal NOTES access are promising new approaches besides current methods to improve patient care.

Transvaginal specimen extraction in colorectal surgery: current state of the art

BACKGROUND

The expected benefit of transvaginal specimen extraction is reduced incision-related morbidity.

OBJECTIVES

A systematic review of transvaginal specimen extraction in colorectal surgery was carried out to assess this expectation.

SEARCH STRATEGY

The following keywords, in various combinations, were searched: NOSE (natural orifices specimen extraction), colorectal, colon surgery, transvaginal, right hemicolectomy, left hemicolectomy, low anterior resection, sigmoidectomy, ileocaecal resection, proctocolectomy, colon cancer, sigmoid diverticulitis and inflammatory bowel diseases.

SELECTION CRITERIA

SELECTION CRITERIA included large bowel resection with transvaginal specimen extraction, laparoscopic approach, human studies and English language. Exclusion criteria were experimental studies and laparotomic approach or local excision. All articles published up to February 2011 were included.

RESULTS

Twenty-three articles (including a total of 130 patients) fulfilled the search criteria. The primary diagnosis was colorectal cancer in 51% (67) of patients, endometriosis in 46% (60) of patients and other conditions in the remaining patients. A concurrent gynaecological procedure was performed in 17% (22) of patients. One case of conversion to laparotomy was reported. In two patients, transvaginal extraction failed. In left- and right-sided resections, the rate of severe complications was 3.7% and 2%, respectively. Two significant complications, one of pelvic seroma and one of rectovaginal fistula, were likely to have been related to transvaginal extraction. The degree of follow up was specified in only one study. Harvested nodes and negative margins were adequate and reported in 70% of oncological cases.

CONCLUSION

Vaginal extraction of a colorectal surgery specimen shows potential benefit, particularly when associated with a gynaecological procedure. Data from prospective randomized trials are needed to support the routine use of this technique.

Transvaginal rigid-hybrid natural orifice transluminal endoscopic surgery technique for anterior resection treatment of diverticulitis: a feasibility study

BACKGROUND

In laparoscopic anterior resection, minilaparotomy still is required. Recently, transvaginal hybrid natural orifice transluminal endoscopic surgery (NOTES) techniques for cholecystectomy have been described. Reports on operations that require removal of larger specimens, as in anterior resection, are scarce and limited primarily to small case series and case reports. The current study aimed to evaluate the feasibility and safety of transvaginal rigid-hybrid NOTES anterior resection (tvAR) for symptomatic diverticular disease.

METHODS

All female patients presenting with symptomatic diverticulitis of the sigmoid colon were candidates for inclusion in the study. The exclusion criteria specified failure to sign informed consent, previous colorectal resection, anesthesiologic contraindication for pneumoperitoneum, liver failure and coagulopathy, severe acute diverticular bleeding, internal fistula with abscess (Hinchey 2b), perforated diverticulitis with peritonitis (Hinchey 3 or 4), gynecologic or urologic contraindications, and absence of preoperative gynecologic examination. A preoperative and 2-week postoperative gynecologic examination was performed. Quality of life and sexual function were assessed preoperatively and 6 weeks postoperatively.

RESULTS

Of 70 patients, 45 (64.3%) were scheduled for tvAR. Five patients were withdrawn at the beginning of laparoscopy with no transvaginal access performed. Of the remaining 40 patients with attempted tvAR, 4 patients underwent conversion to a minilaparotomy (Pfannenstiel incision) and 2 patients were converted to a total median laparotomy. For 34 patients (85%), the operation was completed transvaginally. A total of 2 major complications and 10 minor complications occurred. No serious postoperative gynecologic morbidity was experienced. At 6 weeks postoperatively, sexual function did not differ significantly from preoperative status.

CONCLUSIONS

For symptomatic diverticular disease, TvAR is feasible, although the presented technique requires laparoscopic expertise and further refinement.

Laparoscopic sigmoid resection with transrectal specimen extraction: a novel technique for the treatment of bowel endometriosis

BACKGROUND

Multidisciplinary laparoscopic treatment is the standard of care for radical treatment of deep infiltrating pelvic endometriosis. If bowel resection is necessary, a muscle-split or Pfannenstiel incision is also required. The avoidance of any laparotomy could decrease surgical stress response, give a faster return to normal bowel function, decrease post-operative pain and reduce wound complications and incisional hernias. We assessed post-operative outcome after a full laparoscopic sigmoid resection for bowel endometriosis.

PATIENTS AND METHODS

Twenty-one patients who underwent elective full laparoscopic sigmoid resection for bowel endometriosis from September 2009 to September 2010 were matched for age, American Society of Anesthesiologists class and BMI to 21 patients who underwent a conventional laparoscopic sigmoid resection. Groups were compared for peri-operative factors, complications, length of hospital stay, post-operative pain (Visual Analog Scale: VAS), analgesics consumption and inflammatory response (plasma C-reactive protein: CRP).

RESULTS

Median operating time was 15 min shorter with transrectal specimen extraction (P = 0.003). VAS-scores and use of analgesics were higher in the conventional laparoscopic group (P = 0.0005). Mean CRP-level tended to be higher in the transrectal specimen extraction group (38%, P = 0.054) but there was no difference in increase in CRP level between groups (P = 0.15). There were no anastomotic leaks or reinterventions in either group, and the median hospital stay was similar. At follow-up, no wound infections or incisional hernias were observed and no patients reported anal dysfunction.

CONCLUSION

Full laparoscopic sigmoid resection reduced operating times and decreased post-operative VAS-scores and analgesic requirements compared with the conventional laparoscopic sigmoid resection for bowel endometriosis.

Laparoscopic sigmoid resection with transrectal specimen extraction has a good short-term outcome

BACKGROUND

Transrectal specimen extraction in laparoscopic sigmoid resection avoids a muscle-split incision for specimen retrieval. A technique for transrectal specimen extraction is described, and the results of a pilot study concerning feasibility are presented.

METHODS

All consecutive patients undergoing laparoscopic sigmoid resection with transrectal specimen extraction were included in this observational study. A specimen retrieval pouch was used to facilitate specimen extraction. All preoperative and operative data, postoperative morbidity, and short-term outcome were gathered in a database.

RESULTS

The described technique was used to treat 21 patients. The median age of the patients was 41 years (interquartile range [IQR], 34-66 years). The median body mass index (BMI) was 23 kg/m2 (IQR, 22-26 kg/m2), and 90% of the patients were women. Of the 21 patients, 13 (62%) underwent a resection for endometriosis, 5 (24%) had resection for diverticular disease, and 3 (14%) underwent a tumor resection. The median operating time was 105 min (IQR, 90-110 min), and the median intraoperative blood loss was 10 ml (IQR, 0-20 ml). All the procedures except one (95%) were performed within 2 h. The median length of the extracted specimen was 20 cm (IQR, 13-25 cm). There was one anastomotic leak (5%), treated by emergency laparotomy and creation of a new colorectal anastomosis. None of the patients required a temporary diverting stoma, and no postoperative mortality occurred. The median hospital stay was 6 days (IQR, 5-7 days). All the patients did well during a median follow-up period of 3.6 months, and none reported any anal dysfunction.

CONCLUSIONS

Laparoscopic sigmoid resection with transrectal specimen extraction is feasible and has a good short-term outcome.

Laparoscopic excision of rectovaginal endometriosis: report of a prospective study and review of the literature

AIM

The surgical management of rectovaginal endometriosis is challenging. We present our experience of the laparoscopic management of these difficult cases, together with a review of the current literature.

METHOD

A prospective database was established for all patients undergoing surgery for Deep Infiltrating Endometriosis (DIE) with rectovaginal and/or ureteric and bladder nodules. Outcomes analysed include operation performed, conversion and complication rates, and length of stay. These outcomes were compared with other laparoscopic rectal resections for alternative diagnoses recorded in the database and with outcomes seen in a literature review of studies on the surgical management of endometriosis.

RESULTS

Between April 2004 and November 2007, 54 patients underwent laparoscopic excision of rectovaginal endometriosis by a combined colorectal and gynaecological surgical team. Out of the 54 patients, 37% of patients underwent a rectal wall shave, 13% had a disc excision of the rectal wall, and 50% underwent segmental resection. There was a conversion rate of 4%, median duration of stay was 3 days, with 2% requiring transfusion. Major complications occurred in 7% of patients, with 4% requiring reoperation. Patients undergoing segmental resection for endometriosis had a higher complication rate than those having surgery for other diagnoses. There was an increased incidence of anastomotic stenosis, with histopathological results suggesting that the disease process might have contributed to this occurrence.

CONCLUSIONS

Laparoscopic resection of rectovaginal endometriosis may be associated with a higher incidence of complications than resections performed for other diagnoses.

Bowel resection for deep endometriosis: a systematic review

BACKGROUND

deep endometriosis involving the bowel often is treated by segmental bowel resection. In a recent review of over 10000 segmental bowel resections for indications other than endometriosis, low rectum resections, in particular, were associated with a high long-term complication rate for bladder, bowel and sexual function.

OBJECTIVES

to review systematically segmental bowel resections for endometriosis for indications, outcome and complications according to the level of resection and the volume of the nodule.

SEARCH STRATEGY

all published articles on segmental bowel resection for endometriosis identified through MEDLINE, EMBASE and ISI Web of Knowledge databases during 1997-2009.

SELECTION CRITERIA

the terms 'bowel', 'rectal', 'colorectal', 'rectovaginal', 'rectosigmoid', 'resection' and 'endometriosis' were used. Articles describing more than five bowel resections for endometriosis, and with details of at least three of the relevant endpoints.

DATA COLLECTION AND ANALYSIS

data did not permit a meaningful meta-analysis.

MAIN RESULTS

thirty-four articles were found describing 1889 bowel resections. The level of bowel resection and the size of the lesions were poorly reported. The indications to perform a bowel resection were variable and were rarely described accurately. The duration of surgery varied widely and endometriosis was not always confirmed by pathology. Although not recorded prospectively, pain relief was systematically reported as excellent for the first year after surgery. Recurrence of pain was reported in 45 of 189 women; recurrence requiring reintervention occurred in 61 of 314 women. Recurrence of endometriosis was reported in 37 of 267 women. The complication rate was comparable with that of bowel resection for indications other than endometriosis. Data on sexual function were not found.

CONCLUSIONS

after a systematic review, it was found that the indication to perform a segmental resection was poorly documented and the data did not permit an analysis of indication and outcome according to localisation or diameter of the endometriotic nodule. Segmental resections were rectum resections in over 90%, and the postoperative complication rate was comparable with that of resections for indications other than endometriosis. No data were found evaluating sexual dysfunction.

Transvaginal video-assisted cholecystectomy in clinical practice

BACKGROUND

Transvaginal video-assisted cholecystectomy with rigid instruments is a new procedure that combines natural orifice surgery (NOS) with classic laparoscopy. This hybrid technique requires conventional laparoscopy via an umbilical incision. To date it is unclear if this procedure is safe and feasible in routine practice.

METHODS

We report on a case series of 128 women who consented to transvaginal cholecystectomy. Data, including visual analog scores (VAS), were collected prospectively via a standard digital spreadsheet. Patients completed satisfaction questionnaires within 10 days after discharge from hospital. We report on outcomes, age, body mass index, operating time, complications, pain scores, and patient satisfaction.

RESULTS

In 115 (89.8%) patients the procedure was performed as a transvaginal operation. In 11 women (8.6%), we converted to standard laparoscopy, and in 2 cases (1.6%), we converted to an open procedure. Mean age was 52.4 years (range = 23-78 years) and mean body mass index was 27.8 (range = 18.8-42). Mean operating time was 60.6 min (range = 22-110 min). Other procedures were combined with hybrid cholecystectomy in six cases. Complications following transvaginal access included one vaginal bleeding, one perforation of the urinary bladder, and one superficial lesion of the rectum. In one case the hepatic duct had to be stented due to leakage after the procedure via endoscopic retrograde cholangiography. Mean VAS on day 1 was 2.26 (± 0.31 SEM) and on day 2 it was 1.53 (± 0.35 SEM). In a postoperative questionnaire, 95% of patients indicated that they would recommend this procedure to other patients.

CONCLUSIONS

Transvaginal cholecystectomy is a safe and easy-to-learn procedure. Possible complications are different than those of standard laparoscopic procedures. Trauma to the abdominal wall and scarring is minimal. Postoperative pain scores were not different than those of standard laparoscopy and a high percentage of patients are satisfied with the procedure.

Cirurgia por orifícios naturais transcolônica: acesso NOTES peri-retal (PNA) para excisão mesoretal total

OBJETIVOS: Cirurgia por orifícios naturais tem sido recentemente aplicada em series clínicas para cirurgia abdominal. Apesar de potenciais vantagens do acesso NOTES transcolônico para doenças colorretais, este ainda não havia sido utilizado clinicamente. O presente trabalho descreve a primeira aplicação bem-sucedida de NOTES transcolônico da literatura, em uma nova abordagem de excisão mesoretal total (TME) para cancer de reto. MÉTODOS: Foi obtida aprovação de Comitê de Ética em Pesquisa para cirurgias por orifícios naturais, e o paciente assinou termo de consentimento informado. Em um paciente de 54 anos portador de adenocarcinoma de reto, o procedimento de retossigmoidectomia e linfadenectomia, com excisão mesoretal total foi realizada utilizando um acesso posterior transcolônico pouco acima da borda anal. A dissecção mesorretal foi conseguida utilizando um colonoscópio flexível e instrumentos endoscópicos, com assistência laparoscópica. O espécime foi retirado via transanal, e anastomose foi transorificial, com estoma proximal de proteção. RESULTADOS: O tempo operatório foi de 350 min, não ocorrendo complicações operatórias. A evolução pós-operatória foi favorável, e o paciente recebeu alta no sexto dia de pós-operatório com dieta plena. CONCLUSÃO: Este primeiro relato bem sucedido de cirurgia NOTES transcolônica traz potencialmente novas fronteiras de aplicações clínicas na cirurgia minimamente invasiva. O tratamento de doenças colorretais utilizando o novo acesso flexível PNA (Perirectal NOTES Access) é uma promissora nova abordagem, paralelamente à laparoscopia e cirurgia aberta, para melhoria do tratamento dos pacientes.

A novel approach of robotic-assisted anterior resection with transanal or transvaginal retrieval of the specimen for colorectal cancer

BACKGROUND

The surgical robot (da Vinci S) is superior to conventional laparoscopy; it provides clearer, three-dimensional images and an extended range of motion for the instruments. We used this robot for laparoscopic surgery to perform a totally intracorporeal resection of the rectum and colorectal anastomosis, with transanal or transvaginal retrieval of specimens.

METHODS

We prospectively collected data on 13 patients who underwent robot-assisted rectal surgery by a single surgeon from January to March 2008. For low anterior resection (LAR), the splenic flexure was mobilized laparoscopically, followed by robotic rectal resection and anastomosis, and transanal removal of specimens in both male and female patients. We retrieved the specimen through the vagina in some female patients.

RESULTS

Eleven and two patients underwent LAR and anterior resection (AR), respectively. Mean operative time was 260.8 ± 62.9 (range 210-390) min with median robotic time of 118 ± 43.6 (range 122-186) min. There were three postoperative complications, in two patients. One patient had anastomotic bleeding and the other had anastomotic leakage following inferior mesenteric artery bleeding. The circumferential margins were clear. The tumor stage was I in four, II in two, and III in seven patients. In one patient, the distal resection margin was involved. The patients resumed an oral diet and were discharged on the third and seventh day after surgery.

CONCLUSION

Robotic-assisted laparoscopic methods were safe for AR in patients with colorectal cancer. This approach made it easier to perform a total mesorectal excision, anastomosis, and closure of the vaginal wall, and avoided the traditional abdominal incision.

Totally NOTES (T-NOTES) transvaginal cholecystectomy using two endoscopes: preliminary report

BACKGROUND

Clinical applications of transvaginal Natural Orifice Transluminal Endoscopic Surgery (NOTES) are still limited in the literature, mostly case reports performed by hybrid procedures with laparoscopic assistance. Avoiding complications from incisions is the main goal for natural orifice surgery. This study reports on a technique developed at our institution that uses two endoscopes inserted into the vagina to perform a Totally NOTES (T-NOTES) transvaginal cholecystectomy, and describes preliminary results.

METHODS

IRB approval was obtained at the institution for transvaginal NOTES clinical trials, and informed consent was obtained. The technique of T-NOTES transvaginal cholecystectomy was clinically applied in four female patients with symptomatic cholelithiasis, and data were prospectively documented. Transvaginal NOTES access was obtained by direct vaginal incision, and two endoscopes were simultaneously introduced in the abdominal cavity. Dissection was accomplished with available endoscopic instruments. Ligation of cystic duct and artery was performed using endoscopic clips. Vaginal closure was achieved using the direct-vision sutured technique.

RESULTS

The technique was successfully performed in the four patients. Insufflation and spatial orientation was of good quality. Mean operative time was 210 min. There were no complications during the 30-day follow-up. Postoperative course was uneventful, and patients were released from the hospital on the first postoperative day.

CONCLUSION

Tranvaginal T-NOTES using two endoscopes provides a feasible method for natural orifice cholecystectomy using available technology. Large-series studies are needed to evaluate the results with respect to safety of the approach.

Transvaginal ultrasound for diagnosis of deeply infiltrating endometriosis

Deeply infiltrating endometriosis is the clinical form of the disease that is generally associated with conditions of more intense pain and may require more complex surgical management, consequently resulting in greater risks to the patient. In recent years, various investigators have confirmed the usefulness of methods such as magnetic resonance imaging (MRI), transrectal ultrasound and transvaginal ultrasound (TVUS) for the diagnosis of deep endometriotic lesions. The objectives of the present study are to describe the method used to perform TVUS for the detection of deeply infiltrating endometriosis, and to discuss the clinical benefits that the data obtained may offer clinicians providing care for patients suspected of having this type of endometriosis.

NOTES. Transvaginal cholecystectomy: report of the first case

Natural Orifice Translumenal Endoscopic Surgery is a new development area with potential advantages for patients. However, technical and ethical challenges involved in perforation and closure of a healthy organ, as seen in transgastric access, and lack of comprehension of physiopathology of these approaches haven't allowed clinical application. The present study, based on previous animal experiments, describes the first clinical application of transvaginal Natural Orifice Translumenal Endoscopic Surgery. On March 13, 2007, a 43-year-old female patient with symptomatic cholelithiasis with surgical indication was submitted to elective Natural Orifice Translumenal Endoscopic Surgery transvaginal cholecystectomy using a colonoscope, endoscopic graspers, and vaginal platform instruments. Operative time was 66 minutes, and vaginal access and closure were obtained in 15 minutes. The patient had good postoperative evolution and was dismissed within 48 hours without complications. Recent literature and experience of the present study group suggest possibilities for preliminary clinical applications by transvaginal natural orifice surgery. The access may offer earlier benefits in the literature than the transgastric route because of lack of danger of fistula and peritonitis. Further studies regarding instrument development and physiology of natural orifice surgery are ongoing, possibly bringing solutions for more advanced procedures.

A new laparoscopic-transvaginal technique for rectosigmoid resection in patients with endometriosis

OBJECTIVE

To present our experience with a new technique for laparoscopic rectosigmoid resection in patients with endometriosis.

DESIGN

Prospective collaborative cohort study.

SETTING

Gynecologic departments of two university hospitals.

PATIENT(S)

Thirty-three women with rectosigmoid endometriotic lesions requiring segmental bowel resection.

INTERVENTION(S)

Laparoscopic intracorporeal division of the distal bowel and exteriorization of the affected segment via a colpotomy incision to complete the resection.

MAIN OUTCOME MEASURE(S)

Intraoperative and postoperative complications, and relief from symptoms.

RESULT(S)

The only intraoperative complication was bleeding from the inferior mesenteric artery that required conversion to laparotomy to obtain hemostasis. No patient required a temporary colostomy. No anastomotic complications were identified. Postoperative complications included a symptomatic pelvic seroma that required operative drainage in 1 patient and urinary retention that required intermittent self-catheterization in 3 women. The median follow-up duration was 13 months (range, 3-27 mo). Twenty-seven women were symptom free at the time of last follow-up evaluation. No patient had recurrent cyclic rectal bleeding, rectal pain on defecation, or tenesmus. Postoperatively, 4 of 13 patients who tried to conceive were successful.

CONCLUSION(S)

Segmental colorectal resection with a combined laparoscopic-transvaginal approach, avoiding the extension of port-site incisions, represents a viable option for the treatment of bowel endometriosis.

NOTES transvaginal cholecystectomy: preliminary clinical application

BACKGROUND

Natural orifice translumenal endoscopic surgery (NOTES) is an emerging concept in the recent literature that could lead to potential benefits in clinical applications. Restricted to animal experiments, however, human procedures have not yet been published. Because of the technical and ethical challenges involved in perforation and closure of a healthy organ-as is also seen in operating via the transgastric route-and because of the lack of understanding of the physiopathology and infection risk with these approaches, they have not been applied in the clinical setting. Thus the present study, based on previous animal experiments, describes preliminary clinical application in four cases of transvaginal NOTES cholecystectomy, and discusses safety, feasibility, and potential benefits of the method.

METHODS

Preliminary acute and survival animal experiments developed by the NOTES Research Group at our institution solved such technical problems for transvaginal NOTES as spatial orientation, insufflation, and instrumentation, making possible the introduction of NOTES as a clinical application. The trials were approved by ethics committee of our institution, and informed consent was obtained from all patients. Since 13 March 2007, four female patients with elective surgical indication for cholecystectomy have undergone transvaginal NOTES cholecystectomy. All intraoperative and postoperative parameters were documented. Vaginal access was achieved under direct vision with conventional instruments, and a 2-channel colonoscope was inserted into the abdominal cavity. After endoscopic insufflation to achieve pneumoperitoneum with CO(2), instruments were inserted through and alongside a colonoscope, allowing successful NOTES cholecystectomy in all patients, with vaginal extraction of the gallbladder. The vaginal wound was closed by direct vision using conventional instruments.

RESULTS

The procedure was successful in all patients, with operative time of 45-115 min. Patients experienced low need for postoperative analgesia. Free oral intake was permitted 2 h after the procedure. There were no postoperative complications, and patients were discharged, according to the study protocol, 48 h after the procedure.

CONCLUSIONS

Preliminary results showed the feasibility and safety of the transvaginal NOTES method in this small initial study population. The technique, developed in our institution, and not transgastric NOTES, may be the preferred approach to serve as the basis for clinical studies.

Laparoscopic colorectal resections with transvaginal specimen extraction for severe endometriosis

INTRODUCTION

Bowel resection is now considered the "gold standard" treatment for severe endometriosis infiltrating the bowel. Laparoscopic colorectal resection can be considered a safe option in order to reduce surgical trauma and complications as well as to improve cosmetics. Transvaginal approach, used for several years to remove large specimens, can be an interesting approach also in case of colorectal resections.

AIM OF THE STUDY

To present our experience on laparoscopic colorectal resection and transvaginal specimen extraction as treatment of severe endometriosis.

RESULTS

Eleven patients (mean age 45+/-12 years) have been operated by a combined team of gynecologist and colorectal surgeons. There were no intra- or post-operative complications. In all cases, the transvaginal route was used to remove the specimen and prepare the bowel for anastomosis. Patients were allowed to free light diet on post-operative day 3+/-1 and discharged on day 5+/-2. The mean follow-up was 4+/-2 months and all patients are well with normal bowel function and symptoms free.

CONCLUSIONS

Our preliminary experience demonstrates such approach is safe and feasible with excellent results in term of post-operative course.

[The natural orifice surgery concept. Vision and rationale for a paradigm shift]

BACKGROUND

During the 20th Century, laparoscopic surgery achieved high standards and significantly reduced morbidity. In order to make surgery simpler and safer, a new concept, natural orifice surgery (NOS), has recently been introduced. The approach to the abdominal cavity may be transoral-transgastric, transvaginal-transdouglas or transanal-transrectal. This article describes the logic behind this approach and the expected challenges.

METHODS

In order to realize this goal, we founded the first European based working group on NOS. This group concentrates on the development of transdouglas procedures in women by using the transdouglas endoscopic device (TED). This is a wide, multi-channel instrument, which will enable surgery to be performed via a single entry.

RESULTS

Simulation of various intra-abdominal operations, such as staging, cholecystectomy, appendectomy, myomectomy und ovarectomy, using TED has already been carried out. Practical studies are planned in the near future.

CONCLUSION

The feasibility of NOS has been demonstrated in various experimental studies. We believe that this technique will create a spectrum of innovative and high quality operations and will improve patient safety.

Bowel endometriosis: presentation, diagnosis, and treatment

Bowel endometriosis opens a new frontier for the gynecologist, as it forces the understanding of a new anatomy, a new physiology, and a new pathology. Although some women with bowel endometriosis may be asymptomatic, the majority of them develop a variety of gastrointestinal complains. No clear guideline exists for the evaluation of patients with suspected bowel endometriosis. Given the fact that, besides rectal nodules, bowel endometriosis can not be diagnosed by physical examination, imaging techniques should be used. Several techniques have been proposed for the diagnosis of bowel endometriosis including double-contrast barium enema, transvaginal ultrasonography, rectal endoscopic ultrasonography, magnetic resonance imaging, and multislice computed tomography enteroclysis. Medical management of bowel endometriosis is currently speculative; expectant management should be carefully balanced with the severity of symptoms and the feasibility of prolonged follow-up. Several studies demonstrated an improvement in quality of life after extensive surgical excision of the disease. Bowel endometriotic nodules can be removed by various techniques: mucosal skinning, nodulectomy, full thickness disc resection, and segmental resection. Although the indications for colorectal resection are controversial, recent data suggest that aggressive surgery improves symptoms and quality of life.

TARGET AUDIENCE

Obstetricians & Gynecologists, Family Physicians.

LEARNING OBJECTIVES

After completion of this article, the reader should be able to describe the varied appearance of bowel endometriosis, recall that it is difficult to diagnose preoperatively, and explain that surgical treatment offers the best treatment in symptomatic patients through a variety of surgical techniques which is best accomplished with a team approach.

RECTAL ENDOMETRIOSIS: RESULTS OF RADICAL EXCISION AND REVIEW OF PUBLISHED WORK

BACKGROUND

The aim of this paper is to review the results of surgical excision of rectal endometriosis and review the published work on this challenging condition.

METHODS

All cases of endometriosis involving the rectum treated by a single colorectal surgeon were identified from a prospective database and the results reviewed.

RESULTS

Between 1995 and 2005, 213 rectal procedures were carried out on 203 patients together with an endogynaecologist. Eighteen cases involved dissection of endometriosis off the rectal wall, 58 involved full-thickness excision of the anterior rectal wall and 137 segmental excisions of the rectum were carried out. A loop ileostomy was required in 7 (5%) of the segmental resections. Seventy-five per cent of the cases were either laparoscopic or laparoscopically assisted. Infertility was significantly more common in the group requiring a segmental resection (P=0.026) and a history of rectal pain during defecation more common in patients having dissection of endometriosis off the rectal wall (P=0.031). There were no other significant differences between the different types of rectal surgery. The morbidity for all rectal procedures was 7% and there was one anastomotic leak in the segmental resection group. The actuarial rectal recurrence rate of endometriosis was 22.2% 95% confidence interval (CI) (2.5, 42.0) for dissection off the rectal wall and this was significantly different from the recurrence of 5.17% 95%CI (0.0, 10.9) for anterior rectal wall excision and 2.19% 95%CI (0.0, 4.6) for segmental rectal resection (P=0.007). The overall rectal recurrence for all cases was 4.69% 95%CI (1.8, 7.5).

CONCLUSION

Endometriosis of the rectum can be successfully treated with low morbidity and low recurrence rates by excising the disease as completely as possible using full-thickness excision of the anterior rectal wall or segmental resection of the rectum.