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Piątkowski J, Jagielski M, Szeliga J, Nowak M, Jackowski M. Transanal total mesorectal excision (TaTME) in rectal cancer treatment within an expert center. Sci Rep 2023; 13:17084. [PMID: 37816858 PMCID: PMC10564843 DOI: 10.1038/s41598-023-44247-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 10/05/2023] [Indexed: 10/12/2023] Open
Abstract
The objective of this study was to evaluate treatment outcomes in patients who underwent the TaTME procedure for cancer of the middle and low rectum in an expert center. Prospective analysis of the outcomes of all consecutive patients treated using the TaTME technique for cancer of the middle and distal rectum at the our medical center between March 1, 2015, and March 31, 2022. A total of 128 patients (34 women, 94 men; mean age 66.01 [38-85] years) with cancer of the middle and distal rectum qualified for TaTME. TaTME procedures were performed in 127/128 (99.22%) patients. Complications of surgery were observed in 22/127 (17.32%) patients. Negative proximal and distal margins were confirmed in all 127 patients. Complete (R0) resection of the mesorectum was confirmed in 125/127 (98.43%) and nearly complete (R1) resection was confirmed in 2/127 (1.57%) patients. The average follow-up period was 795 days (296-1522) days. Local recurrence was detected during the follow-up period in 2/127 (1.57%) patients. This study showed that the TaTME procedure is an effective and safe method for the minimally invasive treatment of middle and low rectal cancers, particularly within an expert center setting.
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Robitaille S, Maalouf MF, Penta R, Joshua TG, Liberman AS, Fiore JF, Feldman LS, Lee L. The impact of restorative proctectomy versus permanent colostomy on health-related quality of life after rectal cancer surgery using the patient-generated index. Surgery 2023; 174:813-818. [PMID: 37495462 DOI: 10.1016/j.surg.2023.06.033] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 05/16/2023] [Accepted: 06/18/2023] [Indexed: 07/28/2023]
Abstract
BACKGROUND The impact of bowel dysfunction versus colostomy on quality of life after rectal cancer surgery is poorly understood. BACKGROUND To evaluate the quality of life after rectal cancer surgery in patients with colostomy versus restorative proctectomy. METHODS A mixed-methods study measuring quality of life using the Patient-Generated Index, patients were asked to list up to 5 areas of their life affected by their surgery. Areas were then weighted according to patients' preferences for improvement to generate a score from 0-100. The areas reported by patients were linked to the International Classification of Functioning for content analysis. Bowel dysfunction was measured using the low anterior resection syndrome score, and patients were then grouped according to (1) colostomy, (2) no/minor, or (3) major low anterior resection syndrome. Quality of life was compared between groups. RESULTS Overall, 121 patients were included (colostomy n = 39, restorative proctectomy n = 82). There were no differences in demographics, neoadjuvant radiotherapy, or time to follow-up between groups. In the restorative proctectomy group, 53% had no/minor, and 47% had major low anterior resection syndrome. Overall, patients with colostomy had significantly lower quality-of-life scores than those with restorative proctectomy. However, patients with major low anterior resection syndrome scored similarly to those with colostomy. On content analysis, patients with colostomies reported more problems with sexual function, body image, and sports. Patients with restorative proctectomy reported more problems with sleep, using transportation, and taking care of themselves. CONCLUSION Colostomy has a more detrimental impact on quality of life than restorative proctectomy. However, bowel dysfunction severity is important to consider. The patient experience between treatments differs.
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Shen Y, Yang TH, Deng X, Wu Q, Wei M, Meng W, Wang ZQ. Closure of pelvic peritoneum with bladder peritoneum flap reconstruction after laparoscopic extralevator abdominoperineal excision: A prospective stage II study. J Surg Oncol 2023; 128:851-859. [PMID: 37462103 DOI: 10.1002/jso.27382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 06/14/2023] [Accepted: 06/19/2023] [Indexed: 09/11/2023]
Abstract
BACKGROUND Extralevator abdominoperineal resection (ELAPE) has increased perineal wound complications due to the extended resection area. Closure of the pelvic peritoneum (CPP) may exclude the abdominal content from descending into the pelvic cavity and reduce the incidence of perineal complications after ELAPE. We have previously introduced bladder peritoneum flap reconstruction (BLAPER) as a novel method for patients in whom traditional CPP is not possible. The aim of the present study was to report the development and preliminary outcomes of BLAPER. METHODS This is a prospective single-arm study at the development and exploration phase and fulfills the IDEAL framework stage II. Ultralow rectal cancer patients with rigid pelvis who underwent ELAPE with BLAPER were enrolled. Primary outcomes were intraoperative complications and postoperative complications within 1 month after surgery. RESULTS Among 27 patients included, the overall success rate of BLAPER was 96.3% (26/27). Indocyanine green fluorescence imaging and antiadhesive barrier placement were introduced to improve the BLAPER technique. The incidence of major pelvic wound complications was 7.7%. No patient who underwent BLAPER has suffered small bowel obstruction (SBO), presence of small bowel in the retrourogenital space, or perineal hernia (PH). CONCLUSIONS BLAPER is safe and may prevent the small bowel from descending into the retrourogenital space and subsequently developing PH and SBO without increasing the intraoperative and postoperative complications. BLAPER may serve as an option when the primary suture of the pelvic peritoneum is not feasible.
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Kitaguchi D, Tsukada Y, Ito M, Horasawa S, Bando H, Yoshino T, Yamada K, Ajioka Y, Sugihara K. Survival outcomes following salvage abdominoperineal resection for recurrent and persistent anal squamous cell carcinoma. EUROPEAN JOURNAL OF SURGICAL ONCOLOGY 2023; 49:106929. [PMID: 37210274 DOI: 10.1016/j.ejso.2023.05.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 04/03/2023] [Accepted: 05/03/2023] [Indexed: 05/22/2023]
Abstract
INTRODUCTION The primary treatment for locoregional failure following chemoradiotherapy for squamous cell carcinoma of the anus (SCCA) is salvage abdominoperineal resection (APR). However, it is necessary to distinguish between recurrent and persistent diseases because of their varied pathologies. We aimed to clarify the survival outcomes following salvage APR for recurrent and persistent diseases and investigate the significance of salvage APR. MATERIALS AND METHODS This multicentre retrospective cohort study used clinical data from 47 hospitals. All patients were diagnosed with SCCA and underwent definitive radiotherapy as the primary treatment between 1991 and 2015. Overall survival (OS) was compared between the following cohorts: salvage APR for recurrence, salvage APR for persistence, non-salvage APR for recurrence, and non-salvage APR for persistence. RESULTS Five-year OS of salvage APR for recurrence, salvage APR for persistence, non-salvage APR for recurrence, and non-salvage APR for persistence were 75% (46%-90%), 36% (21%-51%), 42% (21%-61%), and 47% (33%-60%), respectively. OS of salvage APR for the recurrent disease was significantly higher than that for persistent disease (p = 0.00597). For recurrent disease, OS following salvage APR was significantly higher than that following non-salvage APR (p = 0.0204); however, for persistent disease, there was no significant difference between salvage and non-salvage APR (p = 0.928). CONCLUSION Survival outcomes following salvage APR for persistent disease were significantly worse than that for recurrent disease. Salvage APR did not improve survival outcomes for persistent disease compared to non-salvage APR. These results will elicit a review of persistent disease treatment strategies.
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Sylla P, Berho M, Sands D, Ricardo A, Bonaccorso A, Moshier E, Hain E, Letchinger R, Marks J, Whiteford M, Mclemore E, Maykel J, Alavi K, Zaghiyan K, Chadi S, Shawki SF, Steele S, Pigazzi A, Albert M, DeBeche-Adams T, Polydorides A, Wexner S. Discordance in Total Mesorectal Excision Specimen Grading in a Prospective Phase 2 Multicenter Rectal Cancer Trial: Are We Overestimating the Quality of Our Resections? Ann Surg 2023; 278:452-463. [PMID: 37450694 DOI: 10.1097/sla.0000000000005948] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Abstract
OBJECTIVES To report the results of a rigorous quality control (QC) process in the grading of total mesorectal excision (TME) specimens during a multicenter prospective phase 2 trial of transanal TME. BACKGROUND Grading of TME specimens is based on the macroscopic assessment of the mesorectum and standardized through synoptic pathology reporting. TME grade is a strong predictor of outcomes with incomplete (IC) TME associated with increased rates of local recurrence relative to complete or near complete (NC) TME. Although TME grade serves as an endpoint in most rectal cancer trials, in protocols incorporating centralized review of TME specimens for quality assurance, discordance in grading and the management thereof has not been previously described. METHODS A phase 2 prospective transanal TME trial was conducted from 2017 to 2022 across 11 North American centers with TME quality as the primary study endpoint. QC measures included (1) training of site pathologists in TME protocols, (2) blinded grading of de-identified TME specimen photographs by central pathologists, and (3) reconciliation of major discordance before trial reporting. Cohen Kappa statistic was used to assess agreement in grading. RESULTS Overall agreement in grading of 100 TME specimens between site and central reviewer was rated as fair, (κ = 0.35; 95% CI: 0.10-0.61; P < 0.0001). Concordance was noted in 54%, with minor and major discordance in 32% and 14% of cases, respectively. Upon reconciliation, 13/14 (93%) major discordances were resolved. Pre versus postreconciliation rates of complete or NC and IC TME are 77%/16% and 7% versus 69%/21% and 10%. Reconciliation resulted in a major upgrade (IC-NC; N = 1) or major downgrade (NC/C-IC, N = 4) in 5 cases overall (5%). CONCLUSIONS A 14% rate of major discordance was observed in TME grading between the site and central reviewers. The resolution resulted in a major change in final TME grade in 5% of cases, which suggests that reported rates or TME completeness are likely overestimated in trials. QC through a central review of TME photographs and reconciliation of major discordances is strongly recommended.
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Hahn SJ, Farooq A, Sylla P. Transanal Total Mesorectal Excision for Rectal Cancer. Adv Surg 2023; 57:187-208. [PMID: 37536853 DOI: 10.1016/j.yasu.2023.04.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
Transanal total mesorectal excision (taTME) is a technique where rectal dissection is begun transanally in a "bottom-up" fashion. This technique facilitates dissection of the most distal part of the rectum and allows the establishment of the distal margin for rectal cancer. TaTME has proven its utility in facilitating low rectal dissection with significantly lower conversion rates and acceptable perioperative, oncological, and functional outcomes. However, taTME remains a challenging technique to learn and adopt. This article describes the technique, indications, and outcomes of taTME in rectal cancer during the last decade.
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Alonso Casado O, Nuñez Mora C, Ortega Pérez G, López Rojo I. Robotic pelvic exenteration in males: systematization of the technique. Cir Esp 2023; 101:555-560. [PMID: 37487944 DOI: 10.1016/j.cireng.2023.03.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Accepted: 03/08/2023] [Indexed: 07/26/2023]
Abstract
Male pelvic exenteration is a challenging procedure with high morbidity. In very selected cases, the robotic approach could make dissection easier and decrease morbidity due to the better vision provided and higher range of movements. In this paper, we describe port placement, instruments, minilaparotomy location, and the stepwise sequence of these procedures. We address 3 different situations: total pelvic exenteration with abdominoperineal resection, colostomy and urostomy; pelvic exenteration with colorectal/anal anastomosis and urostomy; and pelvic exenteration with abdominoperineal resection, colostomy and urinary tract reconstruction.
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van Campenhout I, van Rees JM, Ceelen W, Tanis PJ, Rothbarth J, Verhoef C. Omentoplasty in Patients Undergoing Abdominoperineal Resection After Long-Course Chemoradiation for Locally Advanced and Locally Recurrent Rectal Cancer: A Comparative Single-Institution Cohort Study. Dis Colon Rectum 2023; 66:994-1002. [PMID: 36574322 DOI: 10.1097/dcr.0000000000002523] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND Omentoplasty is a commonly performed procedure after abdominoperineal resection for rectal cancer, but its effectiveness to reduce pelviperineal complications is not firmly established. OBJECTIVE This study aimed to assess the impact of omentoplasty on postoperative outcomes after long-course (chemo) radiotherapy and abdominoperineal resection in patients with locally advanced and locally recurrent rectal cancer. DESIGN Retrospective cohort study. SETTINGS Single center. PATIENTS All patients with locally advanced and locally recurrent rectal cancer undergoing abdominoperineal resection after neoadjuvant (chemo)radiation in a tertiary referral center between 2008 and 2020 were retrospectively reviewed. MAIN OUTCOME MEASURES Multivariable logistic and linear regression analyses were performed to analyze the association between omentoplasty and pelviperineal complications, duration of nasogastric tube drainage, and length of hospital stay. RESULTS A total of 305 patients were analyzed, of whom 245 underwent omentoplasty (80%). Pelviperineal complications occurred in 151 patients (50%) overall, in 125 patients (51%) with omentoplasty, and in 26 patients (43%) without omentoplasty. Independent predictors of pelviperineal complications in multivariable analyses were smoking (OR 2.68; 95% CI, 1.46-4.94) and high BMI (OR 1.68; 95% CI, 1.00-2.83), but not omentoplasty (OR 1.36; 95% CI, 0.77-2.40). The mean duration of nasogastric tube drainage was longer after omentoplasty (6 vs 4 d) with a significant association in multivariable analysis (β coefficient 1.97; 95% CI, 0.35-3.59). Patients undergoing omentoplasty had a significantly longer hospital stay (14 vs 10 d), and omentoplasty remained associated with a prolonged hospital stay after adjusting for confounding (β coefficient 3.05; 95% CI, 0.05-5.74). LIMITATIONS Retrospective design. CONCLUSION Omentoplasty was not associated with a reduced risk of the occurrence of short-term pelviperineal complications after abdominoperineal resection in patients undergoing long-course (chemo)radiotherapy. Furthermore, in patients undergoing omentoplasty, prolonged duration of nasogastric tube drainage and hospital stay was observed. See Video Abstract at http://links.lww.com/DCR/C124 . OMENTOPLASTIA EN PACIENTES SOMETIDOS A RESECCIN ABDOMINOPERINEAL DESPUS DE QUIMIORRADIOTERAPIA DE CURSO LARGO PARA EL CNCER DE RECTO LOCALMENTE AVANZADO Y LOCALMENTE RECURRENTE ESTUDIO DE COHORTE COMPARATIVO DE UNA SOLA INSTITUCIN ANTECEDENTES:La omentoplastía es un procedimiento que se realiza comúnmente después de la resección abdominoperineal por cáncer de recto, pero su efectividad para reducir las complicaciones pelvicoperineales no está firmemente establecida.OBJETIVO:Evaluar el impacto de la omentoplastía en las complicaciones pelvicoperineales a corto plazo y los resultados postoperatorios después quimioradioterapia de curso largo y resección abdominoperineal en pacientes con cáncer de recto localmente avanzado y localmente recurrente.DISEÑO:Estudio de cohorte retrospectivo.ESCENARIO:Centro único.PACIENTES:Se revisaron retrospectivamente todos los pacientes con cáncer de recto localmente avanzado y localmente recurrente sometidos a resección abdominoperineal después de quimioradiación neoadyuvante en un centro de referencia de tercer nivel entre 2008 y 2020.PRINCIPALES MEDIDAS DE RESULTADO:Se realizaron análisis de regresión lineal y logística multivariable para examinar la asociación entre la omentoplastía y las complicaciones pelvicoperineales (p. ej., problemas de heridas perineales y abscesos pélvicos), la duración del drenaje por sonda nasogástrica y la duración de la estancia hospitalaria.RESULTADOS:Se analizaron un total de 305 pacientes de los cuales 245 fueron sometidos a omentoplastía (80%). Las complicaciones pelvicoperineales ocurrieron en 151 pacientes (50%) en general, y en 125 (51%) y 26 (43%) de los pacientes con o sin omentoplastía, respectivamente. Los predictores independientes de complicaciones pelvicoperineales en análisis multivariable fueron el tabaquismo (OR 2.68, IC del 95% 1.46 a 4.94) y un IMC alto (OR 1.68, IC del 95% 1.00 a 2.83), pero no la omentoplastía (OR 1.36, IC del 95% 0.77 a 2.40) . La duración media del drenaje por sonda nasogástrica fue mayor después de la omentoplastía (6 frente a 4 días) con una asociación significativa en el análisis multivariable (coeficiente β 1.97, IC del 95%: 0.35-3.59). Los pacientes que se sometieron a una omentoplastía tuvieron una estancia hospitalaria significativamente más larga (14 frente a 10 días), y la omentoplastía permaneció asociada con una estancia hospitalaria prolongada después de ajustar por factores de confusión (coeficiente β 3.05, IC del 95%: 0.05-5.74).LIMITACIONES:Diseño retrospectivo.CONCLUSIÓN:La omentoplastía no se asoció con un riesgo reducido de aparición de complicaciones pelvicoperineales a corto plazo después de la resección abdominoperineal en pacientes sometidos a quimioradioterapia de larga duración. Adicionalmente, en los pacientes sometidos a omentoplastía se observó una duración prolongada del drenaje por sonda nasogástrica y la estancia hospitalaria. Consulte Video Resumen en http://links.lww.com/DCR/C124 . (Traducción-Dr. Jorge Silva Velazco ).
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Wang W, Zhang YL, Huang L, Kang L. [Application of triangle stability mechanical model in the layer separation of transanal total mesorectal excision]. ZHONGHUA WEI CHANG WAI KE ZA ZHI = CHINESE JOURNAL OF GASTROINTESTINAL SURGERY 2023; 26:603-606. [PMID: 37583015 DOI: 10.3760/cma.j.cn441530-20221028-00437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 08/17/2023]
Abstract
Transanal total mesorectal resection (taTME) has come a long way since it was first used in the clinic in 2010.The learning curve of this procedure is long due to different surgical approaches, different perspectives and different anatomical positions. Many surgeons experience complications during this procedure. Although the advantages and problems of this procedure have been reported in much literature, the anatomy and operation methods of taTME introduced in literatures and training centers are too complicated, which makes many surgeons encounter difficulties in carrying out taTME surgery. According to the author's experience in learning and carrying out this operation, spatial expansion process of ultralow rectal cancer was divided into three stages. At each stage, according to different pulling forces, three different schemes of triangular stability mechanics model were adopted for separation. From point to line, from line to plane, the model can protect the safety of peripheral blood vessels and nerves while ensuring total mesorectal excision . This model simplifies the complex surgical process and is convenient for beginners to master taTME surgical separation skills.
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Bae SU, Varela C, Nassr M, Kim NK. Customized Denonvilliers' Fascia Excision: An Advanced Total Mesorectal Excision Technique for Anteriorly Located Rectal Cancer. Dis Colon Rectum 2023; 66:e304-e309. [PMID: 36825985 DOI: 10.1097/dcr.0000000000002730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
BACKGROUND The role of Denonvilliers' fascia in achieving a negative circumferential resection margin during anterior total mesorectal excision has been controversial. Opinions on whether to dissect in the anterior or posterior surgical plane varies among researchers. IMPACT OF INNOVATION We performed total mesorectal excision with selective en bloc resection of Denonvilliers' fascia based on preoperative MRI staging, preoperative clinical tumor stage, and tumor level in selected patients with anterior rectal tumors adherent to Denonvilliers' fascia. TECHNOLOGY MATERIALS AND METHODS Between March and August 2021, 5 patients who underwent robotic (n = 4) and laparoscopic (n = 1) total mesorectal excision for anteriorly located low rectal adenocarcinomas after neoadjuvant chemoradiotherapy were enrolled in this study. Transabdominal total mesorectal excision dissection is performed by changing to a plane anterior to Denonvilliers' fascia, with partial or total excision tailored to the tumor level and depth of invasion as a further step in circumferential resection margin clearing. Customized excision of Denonvilliers' fascia was performed by dissecting through the extramesorectal plane. This anterior plane permits resection of Denonvilliers' fascia, exposing the prostate and seminal vesicles. PRELIMINARY RESULTS Two tumors were located at the seminal vesicle level and 3 were found at the prostate level. The mean distance from the anal verge to the distal margin of the tumor was 4.8 ± 0.9 cm. Denonvilliers' fascia was preserved in 1 patient and partially excised in 4. Customized Denonvilliers' fascia excision was performed in 3 robotic ultralow anterior resections with coloanal anastomosis, 1 laparoscopic ultralow anterior resection with coloanal anastomosis, and 1 robot-assisted abdominoperineal resection. The circumferential resection margins in all patients were negative. CONCLUSIONS AND FUTURE DIRECTIONS Anterior dissection in front of Denonvilliers' fascia can be selectively performed during total mesorectal excision based on preoperative planning, tumor location, and clinical tumor stage. Preoperative MRI and magnified operative views in minimally invasive platforms provide access to more precise surgical planes for clear circumferential resection, achieving optimal functional outcomes and oncological safety.
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Zhang X, Ma S, Guo Y, Luo Y, Li L. Total neoadjuvant therapy versus standard therapy in locally advanced rectal cancer: A systematic review and meta-analysis of 15 trials. PLoS One 2022; 17:e0276599. [PMID: 36331947 PMCID: PMC9635708 DOI: 10.1371/journal.pone.0276599] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 10/11/2022] [Indexed: 11/06/2022] Open
Abstract
Background Neoadjuvant chemoradiotherapy (nCRT) before total mesorectal excision (TME) and followed systemic chemotherapy is widely accepted as the standard therapy for locally advanced rectal cancer (LARC). This meta-analysis was to evaluate the current evidence regarding nCRT in combination with induction or consolidation chemotherapy for rectal cancer in terms of oncological outcomes. Methods A systematic search of medical databases (PubMed, EMBASE and Cochrane Library) was conducted up to the end of July 1, 2021. This meta-analysis was performed to evaluate the efficacy of TNT in terms of pathological complete remission (pCR), nCRT or surgical complications, R0 resection, local recurrence, distant metastasis, disease-free survival (DFS) and overall survival (OS) in LARC. Results Eight nRCTs and 7 RCTs, including 3579 patients were included in the meta-analysis. The rate of pCR was significantly higher in the TNT group than in the nCRT group, (OR 1.85, 95% CI 1.39–2.46, p < 0.0001), DFS (HR 0.80, 95% CI 0.69–0.92, p = 0.001), OS (HR 0.75, 95% CI 0.62–0.89, p = 0.002), nCRT complications (OR 1.05, 95% CI 0.77–1.44, p = 0.75), surgical complications (OR 1.02, 95% CI 0.83–1.26, p = 0.83), local recurrence (OR 1.82, 95% CI 0.95–3.49, p = 0.07), distant metastasis (OR 0.77, 95% CI 0.58–1.03, p = 0.08) did not differ significantly between the TNT and nCRT groups. Conclusion TNT appears to have advantages over standard therapy for LARC in terms of pCR, R0 resection, DFS, and OS, with comparable nCRT and postoperative complications, and no increase in local recurrence and distant metastasis.
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Yoshioka T, Hasegawa H, Ikeda K, Teramura K, Tsukada Y, Nishizawa Y, Ito M. Efficacy of transperineal minimally invasive surgery with laparoscopic abdominoperineal excision for lower rectal cancer. Surg Today 2022; 53:490-498. [PMID: 36255499 DOI: 10.1007/s00595-022-02597-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 08/22/2022] [Indexed: 11/25/2022]
Abstract
PURPOSE In abdominoperineal excision (APE), the advantages of the "down-to-up" approach are expected to be more obvious when performed as a two-team approach, including transperineal minimally invasive surgery (TpMIS). We investigated the efficacy of TpMIS with laparoscopic APE for lower rectal cancer. METHODS Patients who underwent laparoscopic APE with (n = 20) or without (n = 30) TpMIS between December 2013 and April 2020 were retrospectively reviewed. Patient and tumor characteristics, intraoperative outcome, short-term outcome, and pathological findings were compared. Additional subgroup analyses were performed in technically challenging cases, including male patients, obese patients, and patients with tumors located at the anterior wall. RESULTS There was no marked difference in the patient or tumor characteristics or short-term outcomes, including morbidity and mortality between the two groups. Pathological results were comparable, and the circumferential resection margin (CRM) positive rate was 10% in both groups. TpMIS achieved a significant reduction in operative time (p = 0.02). In a subgroup analysis, the amount of blood loss was also smaller in males (p = 0.02) and patients with a high BMI (> 25) (p = 0.005) than in others. CONCLUSION Simultaneously performing TpMIS and laparoscopic APE is feasible owing to the favorable complication and CRM-positive rates. In terms of operative time and blood loss, TpMIS is expected to be advantageous in both easy and challenging cases.
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Naoi D, Horie H, Sadatomo A, Koinuma K, Ota G, Oshiro K, Tahara M, Mori K, Ito H, Inoue Y, Homma Y, Mimura T, Lefor AK, Sata N. The effect of staple height and rectal wall thickness on anastomotic leak development after laparoscopic low anterior resection. Asian J Surg 2022; 46:1577-1582. [PMID: 36216667 DOI: 10.1016/j.asjsur.2022.09.093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 09/14/2022] [Accepted: 09/20/2022] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND The aim of this study was to evaluate the effect of staple height and rectal wall thickness on the development of an anastomotic leak after laparoscopic low anterior resection performed with the double stapling technique. METHODS One hundred ninety-nine patients treated from 2013 to 2021 were enrolled. Patients were divided into two groups: those who developed an anastomotic leak (AL (+)) and those who did not (AL (-)). Clinicopathological factors were compared between the groups. RESULTS Anastomotic leaks were observed in 8/199 patients (4%). A 1.5 mm linear stapler was used for 35/199 patients (17%), 1.8 mm for 89 (45%), and 2 mm for 75 (38%). In the AL (+) group (n = 8), lower staple height (1.5 mm or 1.8 mm) was used more frequently than in the AL (-) group (n = 191). Rectal wall thickness and the rectal wall thickness to staple height ratio was significantly (p < .05) greater in the AL (+) group. However, rectal wall thickness was significantly (p < .05) greater in patients who received neoadjuvant treatment and those with advanced T stage (T3,4) lesions. CONCLUSION Linear stapler staple height and rectal wall thickness are significantly associated with the development of an anastomotic leak after laparoscopic low anterior resection. Larger staples should be selected in patients with a thicker rectal wall due to neoadjuvant treatment or adjacent advanced rectal tumors.
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Ghareeb WM, Wang X, Zhao X, Emile SH, Shawki S, Chi P. The endorectal incision level of transanal total mesorectal excision (taTME): An emphasis on the distance from the anterior vs. posterior mesorectal ends to the anal verge. J Visc Surg 2022; 160:90-95. [PMID: 36184494 DOI: 10.1016/j.jviscsurg.2022.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND There is no intraluminal guidance to ensure complete inclusion of the mesorectum in transanal total mesorectal excision (taTME). This study aimed to assess the distance difference between the anterior and posterior mesorectal terminal ends and the anal verge as a potential risk for residual mesorectum after resection. METHODS Forty-four surgical specimens of extra-levator abdominoperineal excision (ELAPE) and 28 mid-sagittal cadaveric specimens were included to this study. The distance between the mesorectum terminal end (T) and the endoluminal landmarks (dentate line (D)/anal verge (A)) was measured and compared between men and women. Furthermore, 66 MRI images from The Cancer Imaging Archive (TCIA) were used to validate the same concept in a non-Asian population. RESULTS The mesorectal terminal end was found to be aligned along with the levator hiatus. From the midsagittal view, the ELAPE specimens showed that the distance between T and A anteriorly was significantly longer than the same distance posteriorly (34.74±7.79mm vs 23.74±4.24mm, P<0.001). Similarly, the distance measured in the cadaveric specimens was significantly longer anteriorly than posteriorly (P<0.001). The validation cohort of non-Asian MRI image has confirmed the same (56.68±14.17mm vs. 38.18 ±10.42mm, P<0.001(. There was no significant difference between men and women. CONCLUSIONS Because of the remarkable distance difference between the anterior and posterior mesorectal terminal ends away from the anal verge, the taTME proctectomy level may not meet the required mesorectal end. Thus, if TME is planned, aligning the proctectomy level around the levator hiatus would be the best place that can ensure complete TME.
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Antoun A, Al Rashid F, Alhassan N, Gomez-Garibello C, Fiore JF, Feldman LS, Lee L, Mueller CL. Development of a formative feedback tool for transanal total mesorectal excision. Surg Endosc 2022; 36:6705-6711. [PMID: 34982229 DOI: 10.1007/s00464-021-08943-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 12/06/2021] [Indexed: 11/25/2022]
Abstract
INTRODUCTION Transanal total mesorectal excision (TaTME) is a novel procedure in the treatment of rectal cancer. Current training models for TaTME suggest a period of proctored cases, but no structured feedback tool exists to guide operators during the learning phase. The objective of this study therefore was to develop a formative feedback tool for the critical steps of the transanal portion of TaTME. METHODS A two-round Delphi study by TaTME experts was conducted to determine the items to be included in the formative feedback tool. Participants rated each step from a prepared list using a Likert scale from 1 (Not relevant) to 5 (Very relevant) with the option to suggest additional steps. Responses to the first round were presented in the second round, where participants rated the revised list of steps. Consensus was defined as > 80% of participants rating the step as 4 or 5 (out of 5). Items were combined when appropriate to avoid redundancy. Rating anchors describing performance (on a 5-point scale) were then developed for each step. The final tool was recirculated and participants rated the finished product on its feasibility and usefulness. RESULTS Twenty-six TaTME experts were contacted for participation. Fifteen experts (58%) participated in the first round of the study, and eleven (42%) participated in the second round. The majority (14, 93%) had completed fellowship training in colorectal surgery. The first round of the Delphi study contained 34 items, and 32 items met inclusion criteria after the second round. Redundant items were combined into 15 items that comprised the final tool. Out of eight respondents to the feasibility survey, all believed the feedback tool enhances the feedback of learners and would use it for training purposes if available. CONCLUSION This work describes the development of a novel consensus-based formative feedback tool specific to TaTME.
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Geitenbeek RTJ, Burghgraef TA, Broekman M, Schop BPA, Lieverse TGF, Hompes R, Havenga K, Postma M, Consten ECJ. Cost analysis and cost-effectiveness of open versus laparoscopic versus robot-assisted versus transanal total mesorectal excision in patients with rectal cancer: a protocol for a systematic review. BMJ Open 2022; 12:e057803. [PMID: 35981773 PMCID: PMC9394195 DOI: 10.1136/bmjopen-2021-057803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
INTRODUCTION Nowadays, most rectal tumours are treated open or minimally invasive, using laparoscopic, robot-assisted or transanal total mesorectal excision. However, insight into the total costs of these techniques is limited. Since all three techniques are currently being performed, including cost considerations in the choice of treatment technique may significantly impact future healthcare costs. Therefore, this systematic review aims to provide an overview of evidence regarding costs in patients with rectal cancer following open, laparoscopic, robot-assisted and transanal total mesorectal excision. METHODS AND ANALYSIS A systematic search will be conducted for papers between January 2000 and March 2022. Databases PubMed/MEDLINE, EMBASE, Scopus, Web of Science and Cochrane Library databases will be searched. Study selection, data extraction and quality assessment will be performed independently by four reviewers and discrepancies will be resolved through discussion. The Consensus Health Economic Criteria list will be used for assessing risk of bias. Total costs of the different techniques, consisting of but not limited to, theatre, in-hospital and postoperative costs, will be the primary outcome. ETHICS AND DISSEMINATION No ethical approval is required, as there is no collection of patient data at an individual level. Findings will be disseminated widely, through peer-reviewed publication and presentation at relevant national and international conferences. TRIAL REGISTRATION NUMBER CRD42021261125.
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Maeda S, Ouchi A, Komori K, Kinoshita T, Oshiro T, Numata Y, Ito S, Abe T, Shimizu Y. Safety and Feasibility of Temporary Ileostomy in Older Patients: A Retrospective Study. Wound Manag Prev 2022; 68:18-24. [PMID: 35895293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
BACKGROUND Temporary ileostomy reduces the incidence of severe anastomotic leakage and postoperative mortality. However, little is known about ileostomy-related complications in older adults. PURPOSE To clarify the safety and feasibility of temporary ileostomy for rectal cancer in older patients. METHODS Data were collected from a prospectively created database and complemented by secondary chart review for consecutive patients with rectal malignancy who underwent curative proctectomy with diverting loop ileostomy between 2013 and 2018. Ileostomy construction and closure were compared between two groups (defined as elderly and non-elderly patients). Data for 22 patients who were 75 years of age and older (elderly group) and 160 patients who were younger than 75 years (non-elderly group) were analyzed. RESULTS The median maximum fecal output was significantly higher in the non-elderly group compared with the elderly group. No significant differences were observed between the two groups in postoperative intravenous hydration, creatinine ratio, and ileostomy-related complication rate. Although the elderly group had a higher rate of early stoma closure, the causes were not related to those complications. CONCLUSION Temporary ileostomy was a safe and feasible procedure in this population of older patients with rectal malignancies.
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Maykel JA, Hahn SJ, Beauharnais CC, Meyer DC, Hill SS, Sturrock PR, Davids JS, Alavi K. Oncologic Outcomes After Transanal Total Mesorectal Excision for Rectal Cancer. Dis Colon Rectum 2022; 65:827-836. [PMID: 34629431 PMCID: PMC9067092 DOI: 10.1097/dcr.0000000000002173] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND Recent series have raised concerns about the oncologic outcomes of transanal total mesorectal excision for mid and low rectal cancer. There is a paucity of large data sets from the United States to contribute to the ongoing international discourse. OBJECTIVE This study aimed to investigate the rate of local recurrence and other oncologic outcomes in patients undergoing transanal total mesorectal excision for rectal adenocarcinoma. DESIGN This study is a retrospective review of patients undergoing transanal total mesorectal excision for primary rectal cancer from January 2014 to December 2019. SETTINGS This study was conducted at a single academic tertiary care medical center in the United States. PATIENTS Consecutive patients aged ≥18 years undergoing surgical resection for primary rectal cancer were selected. INTERVENTION The transanal total mesorectal excision procedures were performed utilizing a 2-team approach. MAIN OUTCOME MEASURES Primary outcomes were pathologic quality, local and distant recurrence, treatment-related complications, and overall- and cancer-specific survival. RESULTS Seventy-nine consecutive patients were included. The median age was 58 years (interquartile range, 50-64), and median BMI was 28 kg/m2 (interquartile range, 24.6-32.4). The mesorectum was complete in 69 patients (87.3%), nearly complete in 9 (11.4%), and incomplete in 1 (1.3%). There was circumferential resection margin involvement (<1 mm) in 4 patients (5.1%), and no patients had a positive distal margin (<1 mm) or intraoperative rectal perforation. Composite optimal pathology was achieved in 94.9% of specimens. Median follow-up was 29 months (range, 6-68). There were no local recurrences. Distant metastases were found in 10 (13.5%) patients and diagnosed after a median of 14 months (range, 0.6-53). Disease-free survival was 91.2% at 2 years, and overall survival was 94.7% at 2 years. LIMITATIONS Retrospective design, a single center, and relatively short follow-up period were limitations of this study. CONCLUSION The oncologic outcomes of this cohort support the use of transanal total mesorectal excision in the surgical management of mid to low rectal cancer at centers with appropriate expertise. See Video Abstract at http://links.lww.com/DCR/B723. RESULTADOS ONCOLGICOS DESPUS DE LA EXCISIN TOTAL DEL MESORRECTO POR VA TRANSANAL EN CASOS DE CNCER RECTAL ANTECEDENTES:Estudios recientes han suscitado preocupación sobre los resultados oncológicos de la excisión total del mesorecto por vía transanal en casos de cáncer de recto medio y bajo. Existe una gran escasez de conjuntos de datos en los Estados Unidos, para contribuir en el actual discurso internacional sobre el tema.OBJETIVO:Investigar la tasa de recurrencia local y otros resultados oncológicos en pacientes sometidos a una excisión total del mesorrecto por vía transanal por adenocarcinomas de recto.DISEÑO:Revisión retrospectiva de pacientes sometidos a excisión total del mesorecto por vía transanal en casos de cáncer de recto primario desde enero de 2014 hasta diciembre de 2019.AJUSTE:Centro médico Universitario de atención terciaria único en los Estados Unidos.PACIENTES:Aquellos pacientes consecutivos de ≥ 18 años de edad, sometidos a resección quirúrgica por cáncer de recto primario.INTERVENCIÓN:Los procedimientos de excisión total del mesorecto por vía transanal se realizaron utilizando un enfoque de dos equipos.PRINCIPALES MEDIDAS DE RESULTADO:Los resultados primarios fueron la calidad anatomo-patológica de las piezas, la recidiva local y a distancia, las complicaciones relacionadas con el tratamiento y la sobrevida global específica para el cáncer.RESULTADOS:Se incluyeron 79 pacientes consecutivos. La mediana de edades fue de 58 años (IQR, 50-64) y la mediana del índice de masa corporal fue de 28 kg / m (IQR, 24,6-32,4). El mesorrecto se encontraba completo en 69 pacientes (87,3%), casi completo en 9 (11,4%) e incompleto en 1 (1,3%). Hubo afectación de CRM (<1 mm) en 4 pacientes (5,1%) y ningún paciente tuvo un margen distal positivo (<1 mm) o perforación rectal intraoperatoria. La histopatología óptima compuesta se logró en el 94,9% de las muestras. La mediana de seguimiento fue de 29 meses (rango 6-68). No se presentaron recurrencias locales. Se encontraron metástasis a distancia en 10 (13,5%) pacientes y se diagnosticaron después de una mediana de 14 meses (rango 0,6-53). La sobrevida libre de enfermedad fue del 91,2% a los 2 años y la sobrevida global fue del 94,7% a los 2 años.LIMITACIONES:Diseño retrospectivo, unicéntrico y período de seguimiento relativamente corto.CONCLUSIÓN:Los resultados oncológicos de este estudio de cohortes, apoyan la realización de excisión total del mesorecto por vía transanal para el tratamiento quirúrgico del cáncer de recto medio y bajo, en centros con la experiencia adecuada. Consulte Video Resumen en http://links.lww.com/DCR/B723. (Traducción-Dr. Xavier Delgadillo).
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Wyatt JNR, Powell SG, Altaf K, Barrow HE, Alfred JS, Ahmed S. Completion Total Mesorectal Excision After Transanal Local Excision of Early Rectal Cancer: A Systematic Review and Meta-analysis. Dis Colon Rectum 2022; 65:628-640. [PMID: 35143429 DOI: 10.1097/dcr.0000000000002407] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Completion total mesorectal excision is recommended when local excision of early rectal cancers demonstrates high-risk histopathological features. Concerns regarding the quality of completion resections and the impact on oncological safety remain unanswered. OBJECTIVE This study aims to summarize and analyze the outcomes associated with completion surgery and undertake a comparative analysis with primary rectal resections. DATA SOURCES Data sources included PubMed, Cochrane library, MEDLINE, and Embase databases up to April 2021. STUDY SELECTION All studies reporting any outcome of completion surgery after transanal local excision of an early rectal cancer were selected. Case reports, studies of benign lesions, and studies using flexible endoscopic techniques were not included. INTERVENTION The intervention was completion total mesorectal excision after transanal local excision of early rectal cancers. MAIN OUTCOME MEASURES Primary outcome measures included histopathological and long-term oncological outcomes of completion total mesorectal excision. Secondary outcome measures included short-term perioperative outcomes. RESULTS Twenty-three studies including 646 patients met the eligibility criteria, and 8 studies were included in the meta-analyses. Patients undergoing completion surgery have longer operative times (standardized mean difference, 0.49; 95% CI, 0.23-0.75; p = 0.0002) and higher intraoperative blood loss (standardized mean difference, 0.25; 95% CI, 0.01-0.5; p = 0.04) compared with primary resections, but perioperative morbidity is comparable (risk ratio, 1.26; 95% CI, 0.98-1.62; p = 0.08). Completion surgery is associated with higher rates of incomplete mesorectal specimens (risk ratio, 3.06; 95% CI, 1.41-6.62; p = 0.005) and lower lymph node yields (standardized mean difference, -0.26; 95% CI, -0.47 to 0.06; p = 0.01). Comparative analysis on long-term outcomes is limited, but no evidence of inferior recurrence or survival rates is found. LIMITATIONS Only small retrospective cohort and case-control studies are published on this topic, with considerable heterogeneity limiting the effectiveness of meta-analysis. CONCLUSIONS This review provides the strongest evidence to date that completion surgery is associated with an inferior histopathological grade of the mesorectum and finds insufficient long-term results to satisfy concerns regarding oncological safety. International collaborative research is required to demonstrate noninferiority. REGISTRATION NO CRD42021245101.
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Kim HJ, Choi GS, Park JS, Park SY, Lee SM, Song SH. Stepwise Improvement of Surgical Quality in Robotic Lateral Pelvic Node Dissection: Lessons From 100 Consecutive Patients With Locally Advanced Rectal Cancer. Dis Colon Rectum 2022; 65:599-607. [PMID: 34759242 DOI: 10.1097/dcr.0000000000002329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND Lateral pelvic node dissection has significant technical difficulty and a high incidence of surgical morbidity. A steep learning curve is anticipated in performing lateral pelvic node dissection. However, no study has previously analyzed the learning curve and surgical skill acquisition for this complex procedure. OBJECTIVES We aimed to evaluate the learning process for performing robotic total mesorectal excision with lateral pelvic node dissection in patients with rectal cancer. DESIGN This is a retrospective analysis of a prospectively collected database. SETTING This study was conducted at a tertiary cancer center. PATIENTS A total of 100 patients who underwent robotic total mesorectal excision with lateral pelvic node dissection between 2011 and 2017 were included. MAIN OUTCOME MEASURES A cumulative sum analysis was calculated based on the number of unilateral retrieved lateral pelvic nodes. Operative time, estimated bloodloss, lateral pelvic node metastatic rate, postoperative morbidities, and local recurrence were also analyzed. RESULTS Cumulative sum modeling suggested 4 learning phases: learning I (33 patients), learning II (19 patients), consolidation (30 patients), and competence (18 patients). In the consolidation and competence phases, we adopted fluorescence imaging and standardized the surgical procedure on the basis of anatomical planes. The competence phase had the greatest number of unilateral retrieved lateral pelvic nodes (12.8 vs 4.9, 8.2, and 10.4; p < 0.001). Urinary complications, including urinary retention and postoperative α-blocker usage, were more frequently observed in learning phase I than in the competence phase (39.4% vs 16.7%, p = 0.034). During the median follow-up of 44.2 months, local recurrence in the pelvic sidewall was observed in 4 patients from learning phase I and in 1 patient from learning phase II. LIMITATIONS This study was limited by its retrospective design. CONCLUSION Completeness of the lateral pelvic node dissection procedure increased with the surgeon's experience and as new imaging systems and surgical technique standardization were implemented. Further studies are warranted to determine the oncologic outcomes associated with each phase. See Video Abstract at http://links.lww.com/DCR/B774. MEJORA GRADUAL DE LA CALIDAD QUIRRGICA EN LA DISECCIN LINFTICA PLVICA LATERAL ROBTICA LECCIONES DE PACIENTES CONSECUTIVOS CON CNCER DE RECTO LOCALMENTE AVANZADO ANTECEDENTES:La disección linfática pélvica lateral tiene una dificultad técnica significativa y una alta incidencia de morbilidad quirúrgica. Se prevé una curva de aprendizaje muy pronunciada al realizar la disección linfática pélvica lateral. Sin embargo, ningún estudio ha analizado previamente la curva de aprendizaje y la adquisición de habilidades quirúrgicas para este procedimiento.OBJETIVOS:Nuestro objetivo fue evaluar el proceso de aprendizaje para realizar la escisión total de mesorrecto robótica con disección linfática pélvica lateral en pacientes con cáncer de recto.DISEÑO:Este es un análisis retrospectivo de una base de datos recopilada prospectivamente.AJUSTE:Este estudio se realizó en un centro oncológico terciario.PACIENTES:Un total de 100 pacientes fueron sometidos a escisión total de mesorrecto robótica con disección linfática pélvica lateral entre 2011 y 2017.PRINCIPALES MEDIDAS DE DESENLACE:Se calculó un análisis de suma acumulativa basado en el número unilateral de ganglios pélvicos laterales recuperados. También se analizaron el tiempo operatorio, la pérdida de sangre estimada, la tasa de metástasis ganglionares pélvicas laterales, las morbilidades postoperatorias y la recidiva local.RESULTADOS:El modelado total acumulativo sugirió cuatro fases de aprendizaje: aprendizaje I (33 pacientes), aprendizaje II (19 pacientes), consolidación (30 pacientes) y competencia (18 pacientes). En las fases de consolidación y competencia, adoptamos imágenes de fluorescencia y estandarizamos el procedimiento quirúrgico basado en planos anatómicos, respectivamente. La fase de competencia tuvo el mayor número de ganglios pélvicos laterales recuperados unilateralmente (12,8 frente a 4,9, 8,2 y 10,4; p < 0,001). Las complicaciones urinarias, incluida la retención urinaria y el uso posoperatorio de bloqueadores beta, se observaron con más frecuencia en la fase de aprendizaje I que en la fase de competencia (39,4% frente a 16,7%, p = 0,034). Durante la mediana de seguimiento de 44,2 meses, se observó una recidiva local en la pared lateral pélvica en cuatro pacientes de la fase de aprendizaje I y en un paciente de la fase de aprendizaje II.LIMITACIONES:Este estudio estuvo limitado por su diseño retrospectivo.CONCLUSIÓNES:La completitud del procedimiento de disección linfática pélvica lateral aumentó con la experiencia del cirujano y a medida que se implementaron nuevos sistemas de imágenes y estandarización de técnicas quirúrgicas. Se necesitan más estudios para determinar los resultados oncológicos asociados con cada fase. Consulte Video Resumen en http://links.lww.com/DCR/B774.
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Xu FM, An YB, Wu GC, Zhang X, Yao HW, Zhang ZT. [Short-term complications after transanal total mesorectal excision for mid-low rectal cancer]. ZHONGHUA WEI CHANG WAI KE ZA ZHI = CHINESE JOURNAL OF GASTROINTESTINAL SURGERY 2022; 25:235-241. [PMID: 35340173 DOI: 10.3760/cma.j.cn441530-20210729-00305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To summarize short-term postoperative complications of transanal total mesorectal excision (taTME) in the treatment of middle-low rectal cancer. Methods: A descriptive case series of cases was constructed. Clinical data of consecutive 83 patients with mid-low rectal cancer who received taTME treatment from November 2016 to April 2021 at Department of General Surgery of Beijing Friendship Hospital, Capital Medical University were collected. Among 83 patients, 58 (69.9%) were males, with a mean age of (61.4±11.8) years; 42 (50.6%) were low rectal cancer, 41 (49.4%) were middle rectal cancer. Short-term postoperative complication was defined as complication occurring within 30 days after operation. The complication was graded according to the Clavien-Dindo classification. At the same time, the morbidity of short-term postoperative complication in the first 40 patients and that in the last 43 patients were compared to understand the differences before and after passing the taTME learning curve. Results: Two patients (2.5%) were converted to laparotomy ; 78 (94.0%) completed anastomosis.While 5 (6.0%) underwent permanent stoma. The total operation time of transabdominal+ transanal procedure was (246.9±85.0) minutes, and the median intraoperative blood loss was 100 (IQR: 100) ml. Seventy-five cases (75 /78, 96.2%) underwent defunctioning stoma, including 74 cases of diverting ileostomy, 1 case of diverting transverse colostomy and 3 cases without stoma. The morbidity of complication within 30 days after operation was 38.6% (32/83), and the morbidity of complication after discharge was 8.4% (7/83). Minor complications accounted for 31.3% (26/83) and major complications accounted for 7.2% (6/83). No patient died within 30 days after operation. The incidence of anastomotic leakage was 15.4% (12/78). Eight patients (9.6%) were hospitalized again due to complications after discharge. The median postoperative hospital stay was 7 (IQR: 3) days. All the patients with minor (I-II) complications received conservative treatment. One patient with grade C anastomotic leakage was transferred to intensive care unit and received a second operation due to sepsis and multiple organ dysfunction. Two patients with paralytic ileus (Clavien-Dindo IIIa) underwent endoscopic ileus catheter placement. There were 3 patients with Clavien-Dindo III or above respiratory complications, including 1 patient with pleural effusion and ultrasound-guided puncture, 2 patients with respiratory failure who were improved and discharged after anti-infection and symptomatic treatment. One patient underwent emergency ureteral stent implantation due to urinary infection (Clavien-Dindo IIIb). The morbidity of postoperative complication in the first 40 cases was 50.0% (20/40), and that in the latter 43 cases decreased significantly (27.9%, 12/43), whose difference was statistically significant (χ(2)=4.270, P=0.039). Conclusions: The procedure of taTME has an acceptable morbidity of short-term postoperative complication in the treatment of mid-low rectal cancer. The accumulation of surgical experience plays an important role in reducing the morbidity of postoperative complication.
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Rodrigues BDS, Rodrigues FP, Buzatti KCLR, Campanati RG, Profeta da Luz MM, Gomes da Silva R, Lacerda-Filho A. Feasibility Study of Transanal Irrigation Using a Colostomy Irrigation System in Patients With Low Anterior Resection Syndrome. Dis Colon Rectum 2022; 65:413-420. [PMID: 33872283 DOI: 10.1097/dcr.0000000000002005] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Low anterior resection syndrome has a negative impact on quality of life. Intestinal irrigation is a method of lavage consisting of a scheduled evacuation. OBJECTIVE This study aims to evaluate functional and quality-of-life outcomes in patients with low anterior resection syndrome after transanal irrigation using a colostomy irrigation system. DESIGN This was a prospective case series. SETTINGS This study presents a single-center experience at a tertiary oncological center in an upper-middle-income country. PATIENTS Patients classified as having minor or major low anterior resection syndrome 12 months after their operation were selected. INTERVENTIONS Transanal irrigation was performed using an ostomy irrigation kit. Questionnaires assessing patients' bowel function (low anterior resection syndrome and Wexner score) and quality of life (Short Form-36 questionnaire) were applied before and after treatment. MAIN OUTCOME MEASURES The primary outcomes were low anterior resection syndrome score and quality-of-life improvement after a 12-month treatment. RESULTS Of the 22 patients included, 20 had major and 2 had minor low anterior resection syndrome, with a median score of 39, especially high rates of incontinence for liquid stool (21; 95.5%), clustering (21; 95.5%), and urgency (17; 77.3%). All patients successfully completed the 3-day training, and there were no complications during the treatment. After the 12-month period, the median score was 8, with 90% of the patients classified as having "no syndrome" and great improvement in all domains of this score. The most improved quality-of-life sections were patient vitality (p = 0.025) and physical (p = 0.002), social (p = 0.001), and emotional aspects (p = 0.001). LIMITATIONS The study was limited by its small sample size and the limited follow-up period. CONCLUSIONS This study presents a safe implementation protocol of an ostomy irrigation device for transanal irrigation. It also adds to the literature that transanal irrigation is a safe, effective, and easily implemented procedure for patients with low anterior resection syndrome with a significant improvement in quality of life. See Video Abstract at http://links.lww.com/DCR/B563.ESTUDIO DE FACTIBILIDAD DE LA IRRIGACIÓN TRANSANAL UTILIZANDO EL SISTEMA DE IRRIGACIÓN PARA COLOSTOMÍA EN PACIENTES CON SÍNDROME DE RESECCIÓN ANTERIOR BAJAANTECEDENTES:El síndrome de resección anterior baja tiene un impacto negativo en la calidad de vida de los pacientes. La irrigación intestinal es un método de lavado que consiste en evacuaciones programadas.OBJETIVOS:Evaluar los resultados de la funcionalidad e impacto en la calidad de vida de los pacientes con síndrome de resección anterior y baja posterior a la irrigación transanal utilizando un sistema de irrigación de colostomía.DISEÑO:Es estudio prospectivo de una serie de casos.ESCENARIO:En este estudio se muestra la experiencia de un centro oncológico de tercer nivel en un país en vías de desarrollo.PACIENTES:Aquellos clasificados como síndrome con afección en menor o mayor grado doce meses después de la cirugía.METODO:Se efectuó irrigación transanal utilizando un equipo de irrigación de estomas. Se aplicaron cuestionarios para valorar la función intestinal de los pacientes (síndrome de resección anterior baja y la escala de Wexner) y para calidad de vida (Cuestionario Corto-36) antes y después del tratamiento.EVALUACION DE LOS RESULTADOS PRINCIPALES:Los principales resultados se obtuvieron de la escala del síndrome de resección baja y la mejoría en la calidad vida doce meses después de tratamiento.RESULTADOS:De los veintidós pacientes incluidos, veinte presentaron manifestaciones mayores del síndrome de resección baja y dos, manifestaciones menores. Con una media de treinta y nueve, se encontraron, especialmente, altos índices de incontinencia a líquidos (21; 95'5%) hiperdefecación "clustering" (21; 95'5%) y urgencia (17; 77'3%). Todos los pacientes completaron en forma satisfactoria el entrenamiento de tres días sin presentarse complicaciones durante el tratamiento. Al término del mes doce la media fue de ocho, con el 90% de los pacientes clasificados como "sin síndrome" y se observó una mejoría substancial en todos los puntos de la evaluación. Las secciones de calidad de vida que mostraron una mejoría significativa fueron: la vitalidad del paciente (p = 0'025), física (p = 0'002), social (p = 0'001) y emocional (p = 0'001).LIMITACIONES:El tamaño de la muestra es pequeño y el tiempo de seguimiento corto.CONCLUSIONES:Este estudio muestra la implementación de un protocolo seguro para la irrigación de estomas mediante un dispositivo transanal. Además contribuye con el concepto en la literatura de que la seguridad de la irrigación transanal es seguro, efectivo y facilmente reproducible para pacientes con síndrome de resección anterior baja con una mejoría significativa en la calidad de vida. Consulte Video Resumen en http://links.lww.com/DCR/B563. (Traducción-Dr. Miguel Esquivel-Herrera).
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Rossi SA, Martineau JJC, Guillier D, Hübner M, Hahnloser D, Raffoul W, di Summa PG. Outcomes of the Composite Anterolateral Thigh Flap for Perineal Reconstruction After Postoncological Abdominoperineal Resection. Dis Colon Rectum 2022; 65:373-381. [PMID: 34784314 DOI: 10.1097/dcr.0000000000002132] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND The vertical rectus abdominis flap is considered the gold standard in perineal reconstruction after oncological abdominoperineal resection; however, it has a nonnegligible donor site morbidity. The anterolateral thigh flap offers reliable soft tissue coverage. OBJECTIVE The aim was to analyze long-term outcomes of composite anterolateral thigh-vastus lateralis flaps in oncological abdominoperineal resections. DESIGN We conducted a retrospective cohort analysis of a prospectively maintained database. SETTINGS This study was conducted in the Lausanne University Hospital. Annually, approximately 10 oncological abdomioperineal resections are performed. Literature reports 7% to 20% of patients undergoing abdominoperineal resection require flap reconstruction; in our institution, approximately 2 patients with large defects after abdominoperineal resections required reconstruction. PATIENTS Twenty-nine pedicled anterolateral thigh-vastus lateralis flaps in 27 consecutive patients (mean age 63 years +/-11.2, 23 with radiochemotherapy) after abdominoperineal resection to cover large defects (median 190 cm2, 48-600 cm2) were analyzed. INTERVENTION Pedicled composite anterolateral thigh-vastus lateralis flaps were performed after oncological abdominoperineal resection. MAIN OUTCOME MEASURES Descriptive statistical analysis was conducted. Short- and long-term outcomes were analyzed, univariate and multivariate analyses were performed. Median follow-up was 16 months (12-48 months). RESULTS Flap-related postoperative complications occurred in 16 flaps; flap-survival was 100%. Multivariate logistic analysis identified initial defect size as predictive for complications. Patients with larger defects (≥ 190 cm2) had higher complication rates (p = 0.006). Long-term analysis revealed 3 chronic fistulae, 2 tumor recurrences, 1 flap dysesthesia, and one perineal acne inversa. LIMITATIONS Limitations include retrospective analysis, selection bias, and lacking a control group. Sample size limits statistical power. CONCLUSIONS The pedicled anterolateral thigh-vastus lateralis flap offers reliable, stable tissue with low morbidity and good long-term outcomes. Complications compared favorably with current literature describing perineal reconstructions with rectus abdominis flaps. The composite anterolateral thigh flap is a valid alternative without the setback of abdominal donor site morbidity. See Video Abstract at http://links.lww.com/DCR/B757.RESULTADOS DEL COLGAJO COMPUESTO ANTEROLATERAL DE MUSLO PARA LA RECONSTRUCCIÓN PERINEAL DESPUÉS DE LA RESECCIÓN ABDOMINOPERINEAL POST ONCOLÓGICAANTECEDENTES:El colgajo vertical de recto abdominal se considera el estándar de oro en la reconstrucción perineal después de la resección abdominoperineal oncológica, sin embargo, tiene una morbilidad no despreciable en el sitio donante. El colgajo anterolateral del muslo ofrece una cobertura confiable de los tejidos blandos.OBJETIVO:El objetivo fue analizar los resultados a largo plazo de los colgajos compuestos anterolaterales del muslo - vasto lateral - en resecciones abdominoperineales oncológicas.DISEÑO:Realizamos un análisis, retrospectivo, de tipo cohorte, de una base de datos mantenida prospectivamente.AJUSTES:Este estudio fue realizado en el hospital universitario de Lausanne. Anualmente se realizan aproximadamente 10 resecciones abdominoperineales oncológicas. La literatura reporta que entre el 7 y el 20% de los pacientes que se someten a una resección abdominoperineal requieren de reconstrucción con colgajo; en nuestra institución, aproximadamente 2 pacientes con grandes defectos tras la resección abdominoperineal requirieron reconstrucción.PACIENTES:Fueron analizados veintinueve colgajos pediculados anterolaterales de muslo - vasto lateral - en 27 pacientes consecutivos (edad media 63 años +/- 11,2, 23 con radio quimioterapia) después de la resección abdominoperineal para cubrir defectos grandes (mediana 190 cm2, 48-600 cm2).INTERVENCIÓN:Tras la resección abdominoperineal oncológica se realizaron colgajos pediculados compuestos anterolaterales de muslo - vasto lateral.PRINCIPALES MEDIDAS DE RESULTADO:Fue realizado un análisis estadístico descriptivo. Fueron analizados los resultados a corto y largo plazo - fueron realizados así mismo análisis uni y multivariados. La mediana de seguimiento fue de 16 meses (12-48 meses).RESULTADOS:Complicaciones postoperatorias relacionadas con el colgajo ocurrieron en 16 colgajos, la supervivencia del colgajo fue del 100%. El análisis logístico multivariado identificó al tamaño del defecto inicial como predictor de complicaciones. Aquellos pacientes con defectos más grandes (≥190 cm2) tuvieron mayores tasas de complicaciones (p = 0,006). El análisis a largo plazo reveló tres fístulas crónicas, dos recidivas tumorales, una disestesia de colgajo y un acné perineal inverso.LIMITACIONES:Las limitaciones incluyen análisis retrospectivo, sesgo de selección y falta de grupo de control. El tamaño de la muestra limita el poder estadístico.CONCLUSIONES:El colgajo pediculado anterolateral de muslo - vasto lateral - ofrece tejido confiable y estable con baja morbilidad y buenos resultados a largo plazo. Los resultados de las complicaciones se mostraron favorables con respecto a la literatura actual que describe reconstrucciones perineales con colgajos de recto abdominal. El colgajo compuesto anterolateral de muslo es una alternativa válida sin el revés de la morbilidad del sitio donante abdominal. Consulte Video Resumen en http://links.lww.com/DCR/B757. (Traducción-Dr. Osvaldo Gauto).
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Segev L, Schtrechman G, Kalady MF, Liska D, Gorgun IE, Valente MA, Nissan A, Steele SR. Long-term Outcomes of Minimally Invasive Versus Open Abdominoperineal Resection for Rectal Cancer: A Single Specialized Center Experience. Dis Colon Rectum 2022; 65:361-372. [PMID: 34784318 DOI: 10.1097/dcr.0000000000002067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND Randomized studies have validated laparoscopic proctectomy for the treatment of rectal cancer as noninferior to an open proctectomy, but most of those studies have included sphincter-preserving resections along with abdominoperineal resection. OBJECTIVE This study aimed to compare perioperative and long-term oncological outcomes between minimally invasive and open abdominoperineal resection. DESIGN This study is a retrospective analysis of a prospectively maintained database. SETTINGS The study was conducted in a single specialized colorectal surgery department. PATIENTS All patients who underwent abdominoperineal resection for primary rectal cancer between 2000 and 2016 were included. MAIN OUTCOME MEASURES The primary outcomes measured were the perioperative and long-term oncological outcomes. RESULTS We included 452 patients, 372 in the open group and 80 in the minimally invasive group, with a median follow-up time of 74 months. There were significant differences between the groups in terms of neoadjuvant radiation treatment (67.5% of the open versus 81.3% of the minimally invasive group, p = 0.01), operative time (mean of 200 minutes versus 287 minutes, p < 0.0001), and mean length of stay (9.5 days versus 6.6 days, p < 0.0001). Overall complication rates were similar between the groups (34.5% versus 27.5%, p = 0.177). There were no significant differences in the mean number of lymph nodes harvested (21.7 versus 22.2 nodes, p = 0.7), circumferential radial margins (1.48 cm versus 1.37 cm, p = 0.4), or in the rate of involved radial margins (10.8% versus 6.3%, p = 0.37). Five-year overall survival was 70% in the open group versus 80% in the minimally invasive group (p = 0.344), whereas the 5-year disease-free survival rate in the open group was 63.2% versus 77.6% in the minimally invasive group (p = 0.09). LIMITATIONS This study was limited because it describes a single referral institution experience. CONCLUSIONS Although both approaches have similar perioperative outcomes, the minimally invasive approach benefits the patients with a shorter length of stay and a lower risk for surgical wound infections. Both approaches yield similar oncological technical quality in terms of the lymph nodes harvested and margins status, and they have comparable long-term oncological outcomes. See Video Abstract at http://links.lww.com/DCR/B754.RESULTADOS A LARGO PLAZO DE LA RESECCIÓN ABDOMINOPERINEAL MÍNIMAMENTE INVASIVA VERSUS ABIERTA PARA EL CÁNCER DE RECTO: EXPERIENCIA DE UN SOLO CENTRO ESPECIALIZADOANTECEDENTES:Estudios aleatorizados han validado la proctectomía laparoscópica para el tratamiento del cáncer de recto igual a la proctectomía abierta, pero la mayoría de esos estudios han incluido resecciones con preservación del esfínter junto con resección abdominoperineal.OBJETIVO:Comparar los resultados oncológicos perioperatorios y a largo plazo entre la resección abdominoperineal abierta y mínimamente invasiva.DISEÑO:Análisis retrospectivo de una base de datos mantenida de forma prospectiva.ENTORNO CLINICO:Servicio único especializado en cirugía colorrectal.PACIENTES:Todos los pacientes que se sometieron a resección abdominoperineal por cáncer de recto primario entre 2000 y 2016.PRINCIPALES MEDIDAS DE VALORACION:Resultados oncológicos perioperatorios y a largo plazo.RESULTADOS:Se incluyeron 452 pacientes, 372 en el grupo abierto y 80 en el grupo mínimamente invasivo, con una mediana de seguimiento de 74 meses. Hubo diferencias significativas entre los grupos en términos de tratamiento con radiación neoadyuvante (67,5% del grupo abierto versus 81,3% del grupo mínimamente invasivo, p = 0,01), tiempo operatorio (media de 200 minutos versus 287 minutos, p < 0,0001) y la duración media de la estancia (9,5 días frente a 6,6 días, p < 0,0001). Las tasas generales de complicaciones fueron similares entre los grupos (34,5% versus 27,5%, p = 0,177). No hubo diferencias significativas en el número medio de ganglios linfáticos extraídos (21,7 versus 22,2 ganglios, p = 0,7), márgenes radiales circunferenciales (1,48 cm y 1,37 cm, p = 0,4), ni en la tasa de márgenes radiales afectados (10,8 cm). % versus 6,3%, p = 0,37). La supervivencia general a 5 años fue del 70% en el grupo abierto frente al 80% en el grupo mínimamente invasivo (p = 0,344), mientras que la tasa de supervivencia libre de enfermedad a 5 años en el grupo abierto fue del 63,2% frente al 77,6% en el grupo mínimamente invasivo (p = 0,09).LIMITACIONES:Experiencia en una institución de referencia única.CONCLUSIONES:Si bien ambos tienen resultados perioperatorios similares, el enfoque mínimamente invasivo, beneficia a los pacientes con estadía más corta y menor riesgo de infecciones de la herida quirúrgica. Ambos enfoques, producen una calidad técnica oncológica similar en términos de ganglios linfáticos extraídos y estado de los márgenes, y tienen resultados oncológicos comparables a largo plazo. Consulte Video Resumen en http://links.lww.com/DCR/B754. (Traducción - Dr. Fidel Ruiz Healy).
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Zhang XY, Li XT, Shi YJ, Lu QY, Cao W, Zhang HM, Wang L, Zhu HT, Yu T, Guan Z, Sun RJ, Zhu HB, Wu AW, Sun YS. Correlation Between the Distance to Mesorectal Fascia and Prognosis of cT3 Rectal Cancer: Results of a Multicenter Study From China. Dis Colon Rectum 2022; 65:322-332. [PMID: 34459446 DOI: 10.1097/dcr.0000000000002167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND The cT3 substage criteria based on extramural depth of tumor invasion in rectal cancer have several limitations. OBJECTIVE This study proposed that the distance between the deepest tumor invasion and mesorectal fascia on pretherapy MRI can distinguish the prognosis of patients with cT3 rectal cancer. DESIGN This is a cohort study. SETTING This study included a prospective, single-center, observational cohort and a retrospective, multicenter, independent validation cohort. PATIENT Patients who had cT3 rectal cancer with negative mesorectal fascia undergoing neoadjuvant chemoradiotherapy followed by radical surgery were included in 4 centers in China from January 2013 to September 2014. INTERVENTION Baseline MRI with the distance between the deepest tumor invasion and mesorectal fascia, extramural depth of tumor invasion, and mesorectum thickness were measured. MAIN OUTCOME MEASURES The cutoff of the distance between the deepest tumor invasion and mesorectal fascia was determined by time-dependent receiver operating characteristic curves, supported by a 5-year progression rate from the prospective cohort, and was then validated in a retrospective cohort. RESULTS There were 124 and 274 patients included in the prospective and independent validation cohorts. The distance between the deepest tumor invasion and mesorectal fascia was the only predictor for cancer-specific death (HR, 0.1; 95% CI, 0.0-0.7) and was also a significant predictor for distant recurrence (HR, 0.4; 95% CI, 0.2-0.9). No statistically significant difference was observed in prognosis between patients classified as T3a/b and T3c/d. LIMITATIONS The sample size is relatively small, and the study focused on cT3 rectal cancers with a negative mesorectal fascia. CONCLUSIONS A cutoff of 7 mm of the distance between the deepest tumor invasion and mesorectal fascia on baseline MRI can distinguish cT3 rectal cancer from a different prognosis. We recommend using the distance between the deepest tumor invasion and mesorectal fascia on baseline MRI for local and systemic risk assessment and providing a tailored schedule of neoadjuvant treatment. See Video Abstract at http://links.lww.com/DCR/B682.CORRELACIÓN ENTRE LA DISTANCIA DE LA FASCIA MESORRECTAL Y EL PRONÓSTICO DEL CÁNCER DE RECTO cT3: RESULTADOS DE UN ESTUDIO MULTICÉNTRICO DE CHINAANTECEDENTES:Los criterios de subestadificación cT3 basados en la profundidad extramural de invasión tumoral en el cáncer de recto tienen varias limitaciones.OBJETIVO:Este estudio propuso que la distancia entre la invasión tumoral más profunda y la fascia mesorrectal en la resonancia magnética preterapia puede distinguir el pronóstico de los pacientes con cT3.DISEÑO:Estudio de cohorte.ENTORNO CLINICO:El estudio incluyó una cohorte observacional, prospectiva, unicéntrica, y una cohorte de validación retrospectiva, multicéntrica e independiente.PACIENTE:Se incluyeron pacientes con cáncer de recto cT3 con fascia mesorrectal negativa sometidos a quimio-radioterapia neoadyuvante seguida de cirugía radical en cuatro centros de China desde enero de 2013 hasta septiembre de 2014.INTERVENCIÓN:Imágenes de resonancia magnética de referencia fueron medidas con la distancia entre la invasión tumoral más profunda y la fascia mesorrectal; la profundidad extramural de la invasión tumoral y el grosor del mesorrecto.PRINCIPALES MEDIDAS DE VALORACION:El límite de la distancia entre la invasión tumoral más profunda y la fascia mesorrectal se determinó mediante curvas características operativas del receptor dependientes del tiempo y se apoyó en la tasa de progresión a 5 años de la cohorte prospectiva, y luego se validó en una cohorte retrospectiva.RESULTADOS:Se incluyeron 124 y 274 pacientes en la cohorte de validación prospectiva e independiente, respectivamente. La distancia entre la invasión tumoral más profunda de la fascia mesorrectal fue el único predictor de muerte específica por cáncer (Hazard ratio: 0.1, 95% CI, 0,0-0,7); y también fue un predictor significativo de recurrencia distante Hazard ratio: 0,4, 95% CI, 0,2-0,9). No se observaron diferencias estadísticamente significativas en el pronóstico entre los pacientes clasificados como T3a/b y T3c/d.LIMITACIONES:El tamaño de la muestra es relativamente pequeño y el estudio se centró en los cánceres de recto cT3 con fascia mesorrectal negativa.CONCLUSIONES:Un límite de 7 mm de distancia entre la invasión tumoral más profunda y la fascia mesorrectal en la resonancia magnética de referencia puede distinguir el cáncer de recto cT3 de diferentes pronósticos. Recomendamos la distancia entre la invasión tumoral más profunda y la fascia mesorrectal en la resonancia magnética de referencia para la evaluación del riesgo local y sistémico, proporcionando un programa personalizado de tratamiento neoadyuvante. Consulte Video Resumen en http://links.lww.com/DCR/B682. (Traducción- Dr. Francisco M. Abarca-Rendon).
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