Rectal Prolapse Pathological Features: Findings in Patients With Outlet Obstruction Treated With Stapled Transanal Rectal Resection.

BACKGROUND: Obstructed defecation syndrome is a common multifactorial disease for which treatment is based primarily on clinic presentation for the lack of reliable instrumental and anatomopathological criteria. OBJECTIVE: The study aimed to analyze the pathological findings of the resected rectal specimens after stapled transanal rectal resection in patients affected by outlet obstruction. DESIGN: Retrospective cohort study. SETTINGS: University hospital. PATIENTS: Patients who underwent rectal resection for obstructed defecation syndrome due to internal rectal prolapse were included. INTERVENTIONS: Specimens of patients with obstructed defecation syndrome were analyzed through conventional histology and morphometric image analysis and compared with those of rectal specimens excised for oncological diseases. MAIN OUTCOME MEASURES: Analysis of the anatomopathological impairments underlying rectal prolapse. RESULTS: From January 2017 to December 2020, 46 specimens from the stapled transanal rectal resection group were compared with 40 specimens from the control group. In the stapled transanal rectal resection group, conventional histology revealed 34 samples (73.9%) had moderate- to severe-grade fibrosis with moderate-grade nerve degeneration in 33 cases (71.7%). In the control group, conventional histology revealed the absence of fibrosis in 31 specimens (77.5%), whereas the absence of nerve degeneration was detected in 37 specimens (92.5%). In the stapled transanal rectal resection group, morphometric image analysis showed severe-grade fibrosis in 25 cases (54.4%) compared to only low-grade fibrosis in 11 cases (27.5%). LIMITATIONS: The small sample size and the retrospective design of the study were limitations. Moreover, there was no chance to use specimens from healthy volunteers as the control group. CONCLUSIONS: Stapled transanal rectal resection specimens showed a higher rate of fibrosis and nerve dysplasia, an important parameter that is typically not considered preoperatively and could lead patients with rectal prolapse to the best treatment approach. See Video Abstract at http://links.lww.com/DCR/B928 . CARACTERSTICAS ANATOMOPATOLGICAS EN EL PROLAPSO DE RECTO HALLAZGOS EN PACIENTES CON OBSTRUCCIN DEL TRACTO DE SALIDA TRATADOS CON RESECCIN RECTAL TRANSANAL CON GRAPAS: ANTECEDENTES:El síndrome de obstrucción del tracto de salida, es una afección multifactorial común, cuyo tratamiento está basado principalmente en la presentación clínica, ésto, debido a la falta de criterios confiables tanto instrumentales como anatomopatológicos.OBJETIVO:Analizamos los hallazgos histopatológicos de las piezas de resección rectal obtenidas por vía transanal mediante grapas, realizadas en pacientes que presentaban obstrucción del tracto de salida.DISEÑO:Este fue un estudio de cohorte retrospectivo.AJUSTE:El escenario fue un hospital universitario.PACIENTES:Aquellos sometidos a resección rectal por síndrome obstructivo del tracto de salida causada por un prolapso rectal interno.INTERVENCIONES:Los especímenes de pacientes con síndrome obstructivo defecatorio fueron analizados mediante histología convencional y análisis de imágenes morfométricas, comparados con especímenes rectales resecados por enfermedad oncológica.PRINCIPALES MEDIDAS DE RESULTADO:El resultado primario se concentró en la investigación de las deficiencias anatomopatológicas subyacentes del prolapso rectal interno.RESULTADOS:Desde enero de 2017 hasta diciembre de 2020, se compararon 46 especímenes del grupo de resección rectal transanal con grapas con 40 especímenes del grupo de control. En histología convencional, el grupo de resección rectal transanal con grapas, 34 muestras (73,9%) presentaron un grado de fibrosis moderada-severa con un grado moderado de degeneración neurógena en 33 casos (71,7%). En el grupo control, la histología convencional reveló ausencia de fibrosis en 31 especímenes (77,5 %), mientras que la ausencia de degeneración neurógena se detectó en 37 controles (92,5 %). En el grupo de resección rectal transanal con grapas, el análisis de imágenes morfométricas mostró fibrosis moderada y fibrosis severa en 19 (41,3%) y 25 (54,4%) casos, respectivamente. En el grupo control, el análisis de imágenes morfométricas mostró solo un bajo grado de fibrosis en 11 casos (27,5%). Se encontró una diferencia significativa en todos los grados de fibrosis y displasia neurógena entre los grupos en las evaluaciones de análisis de imagen morfométrica e histología convencional (p < 0,001).LIMITACIONES:El pequeño tamaño de la muestra y el diseño retrospectivo del estudio. Además, no existe la posibilidad de utilizar un grupo de control con muestras de voluntarios sanos.CONCLUSIONES:Los especímenes de resección rectal transanal con grapas mostraron una mayor tasa de fibrosis y displasia neurógena, parámetro importante que actualmente no está considerado antes de la operación y en un futuro muy cercano podría orientar a los pacientes con prolapso rectal interno hacia un mejor enfoque de tratamiento. Consulte Video Resumen en http://links.lww.com/DCR/B928 . (Traducción-Dr. Xavier Delgadillo ).

Minimally invasive vs. open segmental resection of the splenic flexure for cancer: a nationwide study of the Italian Society of Surgical Oncology-Colorectal Cancer Network (SICO-CNN).

BACKGROUND: Evidence on the efficacy of minimally invasive (MI) segmental resection of splenic flexure cancer (SFC) is not available, mostly due to the rarity of this tumor. This study aimed to determine the survival outcomes of MI and open treatment, and to investigate whether MI is noninferior to open procedure regarding short-term outcomes. METHODS: This nationwide retrospective cohort study included all consecutive SFC segmental resections performed in 30 referral centers between 2006 and 2016. The primary endpoint assessing efficacy was the overall survival (OS). The secondary endpoints included cancer-specific mortality (CSM), recurrence rate (RR), short-term clinical outcomes (a composite of Clavien-Dindo > 2 complications and 30-day mortality), and pathological outcomes (a composite of lymph nodes removed ≧12, and proximal and distal free resection margins length ≧ 5 cm). For these composites, a 6% noninferiority margin was chosen based on clinical relevance estimate. RESULTS: A total of 606 patients underwent either an open (208, 34.3%) or a MI (398, 65.7%) SFC segmental resection. At univariable analysis, OS and CSM were improved in the MI group (log-rank test p = 0.004 and Gray's tests p = 0.004, respectively), while recurrences were comparable (Gray's tests p = 0.434). Cox multivariable analysis did not support that OS and CSM were better in the MI group (p = 0.109 and p = 0.163, respectively). Successful pathological outcome, observed in 53.2% of open and 58.3% of MI resections, supported noninferiority (difference 5.1%; 1-sided 95%CI - 4.7% to ∞). Successful short-term clinical outcome was documented in 93.3% of Open and 93.0% of MI procedures, and supported noninferiority as well (difference - 0.3%; 1-sided 95%CI - 5.0% to ∞). CONCLUSIONS: Among patients with SFC, the minimally invasive approach met the criterion for noninferiority for postoperative complications and pathological outcomes, and was found to provide results of OS, CSM, and RR comparable to those of open resection.

Short stump and high anastomosis pull-through (SHiP) procedure for delayed coloanal anastomosis with no protective stoma for low rectal cancer.

Despite advances in coloanal anastomosis techniques, satisfactory procedures completed without complications remain lacking. We investigated the effectiveness of our recently developed 'Short stump and High anastomosis Pull-through' (SHiP) procedure for delayed coloanal anastomosis without a stoma. In this retrospective study, we analysed functional outcomes, morbidity, and mortality rates and local recurrence of 37 patients treated using SHiP procedure, out of the 282 patients affected by rectal cancer treated in our institution between 2012 and 2020. The inclusion criterion was that the rectal cancer be located within 4 cm from the anal margin. One patient died of local and pulmonary recurrence after 6 years, one developed lung and liver metastases after 2 years, and one experienced local recurrence 2.5 years after surgery. No major leak, retraction, or ischaemia of the colonic stump occurred; the perioperative mortality rate was zero. Five patients (13.51%) had early complications. Stenosis of the anastomosis, which occurred in nine patients (24.3%), was the only long-term complication; only three (8.1%) were symptomatic and were treated with endoscopic dilation. The mean Wexner scores at 24 and 36 months were 8.3 and 8.1 points, respectively. At the 36-month check-up, six patients (24%) had major LARS, ten (40%) had minor LARS, and nine (36%) had no LARS. The functional results in terms of LARS were similar to those previously reported after immediate coloanal anastomosis with protective stoma. The SHiP procedure resulted in a drastic reduction in major complications, and none of the patients had a stoma.

Two-Stage Turnbull-Cutait Pull-Through Coloanal Anastomosis for Low Rectal Cancer: A Randomized Clinical Trial.

Importance: Two-stage Turnbull-Cutait pull-through hand-sewn coloanal anastomosis seems to provide benefits in terms of postoperative morbidity compared with standard hand-sewn coloanal anastomosis associated with diverting ileostomy and further ileostomy reversal in patients operated on for low rectal cancer. Objective: To compare 30-day postoperative and 1-year follow-up results of Turnbull-Cutait pull-through hand-sewn coloanal anastomosis and standard hand-sewn coloanal anastomosis after ultralow rectal resection for rectal cancer. Design, Setting, and Participants: Multicenter randomized clinical trial. Neither patients nor surgeons were blinded for technique. Patients were recruited in 3 centers, Bellvitge University Hospital and Valle d'Hebron University Hospital in Spain and Instituto Nazionale Tumori Fondazione G. Pascale-Istituto di Ricovero e Cura a Carattere Scientifico in Italy. Patients undergoing ultralow anterior rectal resection needing hand-sewn coloanal anastomosis were randomly assigned to 2-stage Turnbull-Cutait pull-through hand-sewn coloanal anastomosis or standard hand-sewn coloanal anastomosis associated with diverting ileostomy. Data were analyzed between June 2012 and October 2018. Interventions: All patients underwent ultralow anterior resection. Patients assigned to the 2-stage Turnbull-Cutait pull-through group underwent exteriorization of a segment of left colon through the anal canal and, after 6 to 10 days, the exteriorized colon was resected and a delayed hand-sewn coloanal anastomosis was performed. For patients assigned to standard coloanal anastomosis, the hand-sewn coloanal anastomosis was performed with diverting ileostomy at first operation. Closure of the ileostomy was planned after 6 to 8 months. Main Outcomes and Measures: Primary outcome was 30-day postoperative morbidity. For the standard hand-sewn coloanal anastomosis with diverting ileostomy group, overall postoperative morbidity includes 30-day postoperative complications of the ileostomy closure. Results: Ninety-two white patients, 72 men and 20 women, with a median age of 62 years, were randomized and included in the analysis. Forty-six patients received standard hand-sewn coloanal anastomosis with diverting ileostomy and 46 received the 2-stage pull-through hand-sewn coloanal anastomosis. Seven patients (15.2%) in the standard hand-sewn coloanal anastomosis group did not undergo reversal ileostomy, and 1 patient (2.2%) in the 2-stage pull-through hand-sewn coloanal anastomosis group did not undergo delayed coloanal anastomosis. The 30-day overall composite postoperative complications rate was similar between the 2 groups (34.8% in 2-stage pull-through hand-sewn coloanal anastomosis group vs 45.7% in standard hand-sewn coloanal anastomosis group; P = .40), with a difference of -10.9 (95% CI, -29.5 to 8.9). Conclusions and Relevance: The 2-stage pull-through hand-sewn coloanal anastomosis after ultralow anterior resection for low rectal cancer is safe and does not increase the postoperative morbidity rate compared with standard coloanal anastomosis with covering ileostomy followed by ileostomy closure. Trial Registration: ClinicalTrials.gov Identifier: NCT01766661.

Complete Mesocolic Excision With Central Vascular Ligation in Comparison With Conventional Surgery for Patients With Colon Cancer - The Experiences at Two Centers.

PURPOSE: Revolutions have occurred over the last 3 decades in the management of patients with colorectal cancer. Most advances were in rectal cancer surgery, especially after the introduction of the total mesorectal excision (TME) by Heald. However, no parallel advances regarding colon cancer surgeries have occurred. In 2009, Hohenberger introduced a new concept trying to translate the survival advantages of TME to patients with colon cancer. This relatively new concept of a complete mesocolic excision (CME) with central vascular ligation (CVL) in the management of patients with colon cancer represents an evolution in operative technique. We performed a comparative study between CME with CVL and conventional surgery for patients with colon cancer at Italian and Egyptian cancer centers, considering surgical quality and clinical outcome. METHODS: Seventy-nine Egyptian patients underwent conventional surgery (non-CME group) while 52 Italian patients underwent CME with sharp dissection between the embryological planes and CVL of the supplying vessels (CME group). RESULTS: Significantly better results were observed in terms of lymph node yield (CME group: 22.5 vs. non-CME group: 12; P < 0.0001) and lymph node ratio (CME group: 0.03 vs. non-CME group: 0.22; P < 0.0001). Regarding surgical morbidity, no significant difference was noted (CME group: 2 vs. non-CME group: 5; P < 0.702). CONCLUSION: CME appears to be a safe procedure when performed by experienced hands through proper embryological planes. It also provides a superior specimen, with a higher lymph node yield, which consequently affects the lymph node ratio. Eventually, CME with CVL should be increasingly adopted and studied more deeply.

Evaluating the Surgeons' Perception of Difficulties of Two Techniques to Perform STARR for Obstructed Defecation Syndrome: A Multicenter Randomized Trial.

BACKGROUND: After initial enthusiasm in the use of a dedicated curved stapler (CCS-30 Contour Transtar) to perform stapled transanal rectal resection (STARR) for obstructed defecation syndrome (ODS), difficulties have emerged in this surgical technique. OBJECTIVE: First, to compare surgeons' perception of difficulties of STARR performed with only Transtar versus STARR performed with the combined use of linear staplers and Transtar to cure ODS associated with large internal prolapse and rectocele; second, to compare the postoperative incidence of the urge to defecate between the 2 STARR procedures. DESIGN AND SETTING: An Italian multicenter randomized trial involving 25 centers of colorectal surgery. PATIENTS: Patients with obstructed defecation syndrome and rectocele or rectal intussusception, treated between January and December 2012. INTERVENTIONS: Participants were randomly assigned to undergo STARR with a curved alone stapler (CAS group) or with the combined use of linear and curved staplers (LCS group). MAIN OUTCOME MEASURES: Primary end-points were the evaluation of surgeons' perception of difficulties score and the incidence of the "urge to defecate" at 3-month follow up. Secondary end-points included duration of hospital stay, rates of early and late complications, incidence of "urge to defecate" at 6 and 12 months, success of the procedures at 12 months of follow-up. RESULTS: Of 771 patients evaluated, 270 patients (35%) satisfied the criteria. Follow-up data were available for 254 patients: 128 patients (114 women) in the CAS group (mean age, 52.1; range, 39-70 years) and 126 (116 women) in LCS group (mean age, 50.7 years; range, 41-75 years). The mean surgeons' perception score, was 15.36 (SD, 3.93) in the CAS group and 12.26 (SD, 4.22) in the LCS group (P < .0001; 2-sample t test). At 3-month follow-up, urge to defecate was observed in 18 (14.6%) CAS group patients and in 13 (10.7%) LCS group patients (P = .34; Fisher's exact test). These values drastically decrease at 6 months until no urge to defecate in all patients at 12 months was observed. At 12-month follow-up, a successful outcome was achieved in 100 (78.1%) CAS group patients and in 105 (83.3%) LCS group patients (P = .34; Fisher's exact test). No significant differences between groups were observed in the hospital stay and rates of early or late complications occurring after STARR. CONCLUSIONS: STARR with Transtar associated with prior decomposition of prolapse, using linear staplers, seems to be less difficult than that without decomposition. Both procedures appear to be safe and effective in the treatment of obstructed defecation syndrome resulting in similar success rates and complications.

"Scarless" and no-stoma surgery for low rectal cancer: the laparoscopic pull-through delayed "high" colo-anal anastomosis.

Despite recent improvements in surgical technique, low rectal anastomoses for rectal cancer still carry a not negligible incidence of anastomotic leakage and pelvic related morbidity. The Turnball-Cutait delayed colo-anal anastomosis, also referred as pull-through procedure was introduced with the aim to reduce the surgical anastomotic related complications and overcome the need of diverting ileostomy creation. Recently, this technique regained popularity as a viable option not only as salvage procedure after anastomotic failure or in case of hostile pelvis but also as first choice option in case of low rectal cancer. We report our experience with a personal technique for delayed "high" colo-anal anastomosis and its combination with a minimally invasive approach in order to reduce surgical morbidity, avoid the need for stoma creation and minimize the impact of surgery. Between 2011 and 2015, eight consecutive patients were operated for low rectal cancer by the described technique by a minimally invasive approach. The procedure was successfully completed in all cases. Post-operative major morbidity and 60 days mortality were nihil. There was no need for stoma creation or service laparotomy resulting in a virtually "scarless" surgery. Mean cumulative hospital stay (combining the two stages of the procedure) was 7, 6 days (range 7-9). The proposed technique by combining the advantage of a minimally invasive approach to those of a delayed "high" colo-anal anastomoses can be considered a viable option for the surgical treatment of low rectal cancer.

Scarless outpatient ablation of pilonidal sinus: a pilot study of a new minimally invasive treatment.

Pain and secretion of purulent materials are symptoms that are often associated with the pilonidal sinus. Generally, these symptoms are neglected by patients for a long time. Patients seek medical attention too late, fearing a prolonged period of pain and inability after surgery. The optimal therapy for pilonidal sinus should have the following characteristics: high healing rate, low recurrence rate, minimal postoperative pain and low cost. The aim of this study is to explore the effectiveness and safety of a new minimally invasive treatment: the scarless outpatient ablation of pilonidal sinus (SOAP). A total of 31 consecutive patients were enrolled; 27 of 31 patients were declared healed after the surgery (87·09%). After 1 year, only 4 of 27 patients (14·81%) reported symptoms related to recurrence of the disease. The average duration of the operation was 7·47 minutes. Patients reported the disappearance of painful symptoms after approximately 2·62 days and had been away from work for 0·53 days. No complications were recorded during the period of study. The advantages of the procedure examined in this study are its simplicity and rapidity of execution, its outpatient setting, its low cost and lack of complications. In our opinion, a randomised controlled trial should be conducted to validate the results related to this technique.

Improved clinical outcomes with a new contour-curved stapler in the surgical treatment of obstructed defecation syndrome: a mid-term randomized controlled trial.

BACKGROUND: Stapled transanal rectal resection has become the primary surgical procedure for surgical treatment of obstructed defecation syndrome caused by rectocele or rectal intussusception. The procedure is generally performed with 2 circular staplers. Recently, a dedicated contour-curved stapler was developed. OBJECTIVE: This study was designed to compare the effects of these stapler types on relief of symptoms. DESIGN AND SETTING: A randomized controlled trial was conducted at a regional referral center in Naples, Italy. PATIENTS: Patients with obstructed defecation syndrome and rectocele or rectal intussusception, treated from November 2005 through September 2007. INTERVENTIONS: Participants were randomly assigned to undergo stapled transanal rectal resection with 2 circular staplers or the contour-curved stapler. MAIN OUTCOME MEASURES: The primary end point was success rate at 24 months, defined by symptom improvement on an obstructed defecation syndrome scale. Secondary end points included success rate at 12 months, Agachan-Wexner constipation score, and rates of early and late complications at 12 and 24 months. RESULTS: Of 198 patients evaluated, 63 patients (31.8%) satisfied criteria. Follow-up data were available for 61 patients: 30 patients (28 women) in the circular stapler group (mean age, 53; range, 41-75 years) and 31 (29 women) in the contour-curved stapler group (mean age, 55; range, 38-69 years). At 24-month follow-up, success was achieved in 21 patients (70.0%) with the circular staplers and in 27 (87.0%) with the contour-curved stapler (P = .10). Symptom scores improved significantly in both groups from baseline to 12 months (P < .0001). Improvement was maintained in the contour-curved stapler group: mean score, 5.0 (SD, 1.6) at 12 months and 5.5 (1.5) at 24 months (P = .20). In the circular stapler group, symptom scores worsened from 4.5 (1.5) at 12 months to 9.0 (1.3) at 24 months (P < .0001). At 24 months, the groups differed significantly in symptom scores (P < .0001) and constipation scores (P = .03). No significant differences were seen in duration of postoperative hospital stay or rate of early or late complications. CONCLUSIONS: Stapled transanal rectal resection with either circular or contour-curved staplers can achieve relief of symptoms in patients with obstructed defecation syndrome. The contour-curved stapler appears to result in more stable clinical results over time.