1
|
Su Y, Li Y, Zhang H, Yang W, Liu M, Luo X, Liu L. Machine learning model for prediction of permanent stoma after anterior resection of rectal cancer: A multicenter study. EUROPEAN JOURNAL OF SURGICAL ONCOLOGY 2024; 50:108386. [PMID: 38776864 DOI: 10.1016/j.ejso.2024.108386] [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: 01/24/2024] [Revised: 04/23/2024] [Accepted: 05/01/2024] [Indexed: 05/25/2024]
Abstract
BACKGROUND The conversion from a temporary to a permanent stoma (PS) following rectal cancer surgery significantly impacts the quality of life of patients. However, there is currently a lack of practical preoperative tools to predict PS formation. The purpose of this study is to establish a preoperative predictive model for PS using machine learning algorithms to guide clinical practice. METHODS In this retrospective study, we analyzed clinical data from a total of 655 patients who underwent anterior resection for rectal cancer, with 552 patients from one medical center and 103 from another. Through machine learning algorithms, five predictive models were developed, and each was thoroughly evaluated for predictive performance. The model with superior predictive accuracy underwent additional validation using both an independent testing cohort and the external validation cohort. The Shapley Additive exPlanations (SHAP) approach was employed to elucidate the predictive factors influencing the model, providing an in-depth visual analysis of its decision-making process. RESULTS Eight variables were selected for the construction of the model. The support vector machine (SVM) model exhibited superior predictive performance in the training set, evidenced by an AUC of 0.854 (95 % CI:0.803-0.904). This performance was corroborated in both the testing set and external validation set, where the model demonstrated an AUC of 0.851 (95%CI:0.748-0.954) and 0.815 (95%CI:0.710-0.919), respectively, indicating its efficacy in identifying the PS. CONCLUSIONS The model(https://yangsu2023.shinyapps.io/psrisk/) indicated robust predictive performance in identifying PS after anterior resection for rectal cancer, potentially guiding surgeons in the preoperative stratification of patients, thus informing individualized treatment plans and improving patient outcomes.
Collapse
Affiliation(s)
- Yang Su
- Department of Gastrointestinal Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 430030, Wuhan, China; Molecular Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 430030, Wuhan, China.
| | - Yanqi Li
- Department of Gastrointestinal Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 430030, Wuhan, China; Molecular Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 430030, Wuhan, China.
| | - Heng Zhang
- Department of Gastrointestinal Surgery, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, 441100, Xiangyang, China.
| | - Wangshuo Yang
- Department of Gastrointestinal Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 430030, Wuhan, China; Molecular Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 430030, Wuhan, China.
| | - Mengdie Liu
- Department of Biliary-Pancreatic Surgery, Affiliated Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 430030, Wuhan, China.
| | - Xuelai Luo
- Department of Gastrointestinal Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 430030, Wuhan, China; Molecular Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 430030, Wuhan, China.
| | - Lu Liu
- Department of Gastrointestinal Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 430030, Wuhan, China; Molecular Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 430030, Wuhan, China.
| |
Collapse
|
2
|
Zhang B, Zhuo GZ, Liu FF, Zhao YJ, Cao Y, Xiang JB, Ding JH. Assessing Severity of Low Anterior Resection Syndrome After Intersphincteric Resection for Ultralow Rectal Cancer: A Pilot Study Using an Exploratory Instrument. Dis Colon Rectum 2024; 67:723-731. [PMID: 38305749 DOI: 10.1097/dcr.0000000000003210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
BACKGROUND The Delphi consensus identified 8 symptoms and 8 consequences as the highest priorities for defining low anterior resection syndrome. OBJECTIVE To describe an exploratory scoring instrument correlating the Delphi consensus on low anterior resection syndrome with functional and quality-of-life scores following intersphincteric resection for ultralow rectal cancer. DESIGN This was a prospective pilot study. In accordance with the Wexner incontinence score, 5 frequency responses ranging from never (score 0) to always (score 4) were used to measure the severity of symptom- and consequence-specific variables. SETTINGS Colorectal surgery referral center. PATIENTS Among 161 eligible patients, 137 participants (85%) completed an electronic self-assessment survey regarding function and quality of life at scheduled follow-up, including 3 to 6, 12, and ≥24 months after ileostomy reversal. MAIN OUTCOME MEASURES Outcome measures included patient-reported severity of the identified priorities, and their correlation with condition-specific quality of life. RESULTS The most frequent symptom and consequence were "emptying difficulties" and "dissatisfaction with the bowels," respectively. Aside from "emptying difficulties," the proportions of negative symptom domains increased after reversal. In particular, neither the frequency responses nor the severity scores of "emptying difficulties" differed between groups. The percentages of "always" selection for consequence domains improved at 12-month follow-up, whereas a higher rate was observed at 24 months, except for "toilet dependence" and "dissatisfaction with the bowels." We found significant improvements in the summary score of the Fecal Incontinence Quality-of-Life Scale ( p = 0.04) and our exploratory instrument ( p = 0.009) but not in functional scores measured by traditional questionnaires. Furthermore, the condition-specific quality of life strongly correlated with the Delphi consensus severity score ( rs = -0.73). LIMITATIONS Single-institution data and limited sample size. CONCLUSIONS The important priorities identified by the Delphi consensus might enable a comprehensive overview and a better assessment of low anterior resection syndrome after intersphincteric resection. See Video Abstract . EVALE LA GRAVEDAD DEL SNDROME DE RESECCIN ANTERIOR BAJA DESPUS DE LA RESECCIN INTERESFINTRICA PARA EL CNCER DE RECTO ULTRABAJO UN ESTUDIO PILOTO QUE UTILIZA UN INSTRUMENTO EXPLORATORIO ANTECEDENTES:El consenso Delphi identificó ocho síntomas y ocho consecuencias como las máximas prioridades para definir el síndrome de resección anterior baja.OBJETIVO:Describir un instrumento de puntuación exploratorio que correlaciona el consenso Delphi sobre el síndrome de resección anterior baja con puntuaciones funcionales y de calidad de vida después de la resección interesfinteriana para el cáncer de recto ultrabajo.DISEÑO:Este fue un estudio piloto prospectivo. De acuerdo con la puntuación de incontinencia de Wexner, se utilizaron cinco respuestas de frecuencia que van desde nunca (puntuación 0) hasta siempre (puntuación 4) para medir la gravedad de las variables específicas de los síntomas y las consecuencias.AJUSTES:Centro de referencia de cirugía colorrectal.PACIENTES:Entre 161 pacientes elegibles, 137 (85%) participantes completaron una encuesta electrónica de autoevaluación sobre la función y la calidad de vida en el seguimiento programado, incluidos 3 a 6, 12 y ≥ 24 meses después de la reversión de la ileostomía.MEDIDAS PRINCIPALES DE RESULTADO:Las medidas de resultado incluyeron la gravedad de estas prioridades informada por los pacientes, así como su correlación con la calidad de vida específica de la afección.RESULTADOS:El síntoma y la consecuencia más frecuentes fueron "dificultades para vaciar" e "insatisfacción con las deposiciones", respectivamente. Aparte de las "dificultades de vaciado", las proporciones de dominios de síntomas negativos aumentaron después de la reversión. En particular, tanto las respuestas de frecuencia como las puntuaciones de gravedad de las "dificultades para vaciar" no difirieron entre los grupos. Los porcentajes de "opción siempre" para los dominios de consecuencias mejoraron a los 12 meses de seguimiento, mientras que se observó una tasa más alta a los 24 meses después, excepto para "dependencia del baño" e "insatisfacción con los intestinos". Encontramos mejoras significativas en la puntuación resumida de la Escala de calidad de vida de incontinencia fecal ( p = 0,04) y nuestro instrumento exploratorio ( p = 0,009), pero no en las puntuaciones funcionales medidas con los cuestionarios tradicionales. Además, la calidad de vida específica de la condición se correlacionó fuertemente con la puntuación de gravedad del consenso Delphi (rs = -0,73).LIMITACIONES:Datos de una sola institución y tamaño de muestra limitado.CONCLUSIONES:Las importantes prioridades identificadas por el consenso Delphi podrían permitir una visión global y una mejor evaluación del síndrome de resección anterior baja después de la resección interesfintérica. (Traducción-Dr. Yesenia Rojas-Khalil ).
Collapse
Affiliation(s)
- Bin Zhang
- Department of Colorectal Surgery, The Characteristic Medical Center of PLA Rocket Force, Beijing, China
| | - Guang-Zuan Zhuo
- Department of Colorectal Surgery, The Characteristic Medical Center of PLA Rocket Force, Beijing, China
| | - Fei-Fan Liu
- Department of Colorectal Surgery, The Characteristic Medical Center of PLA Rocket Force, Beijing, China
- Postgraduate Training Base of Jinzhou Medical University, The Characteristic Medical Center of PLA Rocket Force, Beijing, China
| | - Yu-Juan Zhao
- Department of Colorectal Surgery, The Characteristic Medical Center of PLA Rocket Force, Beijing, China
| | - Yu Cao
- Department of Colorectal Surgery, The Characteristic Medical Center of PLA Rocket Force, Beijing, China
| | - Jian-Bin Xiang
- Department of General Surgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Jian-Hua Ding
- Department of Colorectal Surgery, The Characteristic Medical Center of PLA Rocket Force, Beijing, China
| |
Collapse
|
3
|
He F, Tang C, Yang F, Chen D, Xiong J, Zou Y, Zhao D, Qian K. Preoperative risk factors and cumulative incidence of temporary ileostomy non-closure after sphincter-preserving surgery for rectal cancer: a meta-analysis. World J Surg Oncol 2024; 22:94. [PMID: 38610000 PMCID: PMC11010286 DOI: 10.1186/s12957-024-03363-z] [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: 01/22/2024] [Accepted: 03/21/2024] [Indexed: 04/14/2024] Open
Abstract
BACKGROUND Temporary ileostomy (TI) has proven effective in reducing the severity of anastomotic leakage after rectal cancer surgery; however, some ileostomies fail to reverse over time, leading to conversion into a permanent stoma (PS). In this study, we aimed to investigate the preoperative risk factors and cumulative incidence of TI non-closure after sphincter-preserving surgery for rectal cancer. MATERIALS AND METHODS We conducted a meta-analysis after searching the Embase, Web of Science, PubMed, and MEDLINE databases from their inception until November 2023. We collected all published studies on the risk factors related to TI non-closure after sphincter-preserving surgery for rectal cancer. RESULTS A total of 1610 studies were retrieved, and 13 studies were included for meta-analysis, comprising 3026 patients. The results of the meta-analysis showed that the identified risk factors included older age (p = 0.03), especially > 65 years of age (p = 0.03), male sex (p = 0.009), American Society of Anesthesiologists score ≥ 3 (p = 0.004), comorbidity (p = 0.001), and distant metastasis (p < 0.001). Body mass index, preoperative hemoglobin, preoperative albumin, preoperative carcinoma embryonic antigen, tumor location, neoadjuvant chemoradiotherapy, smoking, history of abdominal surgery, and open surgery did not significantly change the risk of TI non-closure. CONCLUSION We identified five preoperative risk factors for TI non-closure after sphincter-preserving surgery for rectal cancer. This information enables surgeons to identify high-risk groups before surgery, inform patients about the possibility of PS in advance, and consider performing protective colostomy or Hartmann surgery.
Collapse
Affiliation(s)
- Fan He
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Chenglin Tang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Fuyu Yang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Defei Chen
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Junjie Xiong
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Yu Zou
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Dongqin Zhao
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Kun Qian
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.
| |
Collapse
|
4
|
Cui Y, Song M, Tie J, Li S, Wang H, Zhang Y, Geng J, Liu Z, Teng H, Sui X, Zhu X, Cai Y, Li Y, Wang W. Clinicopathological factors predict residual lymph node metastasis in locally advanced rectal cancer with ypT0-2 after neoadjuvant chemoradiotherapy. J Cancer Res Clin Oncol 2024; 150:176. [PMID: 38575793 PMCID: PMC10995092 DOI: 10.1007/s00432-024-05662-0] [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: 01/09/2024] [Accepted: 02/21/2024] [Indexed: 04/06/2024]
Abstract
PURPOSE Residual lymph node metastases (RLNM) remained a great concern in the implementation of organ-preserving strategies and led to poor prognosis in locally advanced rectal cancer (LARC). In this study, we aimed to identify the clinicopathological factors correlated with RLNM in LARC patients with ypT0-2 after neoadjuvant chemoradiotherapy (NCRT). METHODS We retrospectively analyzed 417 patients histologically diagnosed middle-low LARC after NCRT and total mesorectal excision (TME), whose pathological staging was ypT0-2. All patients received pelvic magnetic resonance imaging (MRI) before NCRT. The radiation doses were 50-50.6 Gy for the planning gross tumor volume and 41.8-45 Gy for the planning target volume, respectively. A nomogram for predicting RLNM was constructed using a binary logistic regression. Nomogram performance was assessed by receiver operating characteristic (ROC) curve, calibration curve, decision curve analysis (DCA) and clinical impact curve (CIC). RESULTS After surgery, 191 patients (45.8%) were ypT0, 43 patients (10.3%) were ypT1 and 183 patients (43.9%) were ypT2, and a total of 49 patients (11.8%) were found the presence of RLNM. Multivariable analyses identified MRI-defined mesorectal fascia (MRF)-positive, high-grade histopathology at biopsy, advanced ypT-category, and the presence of perineural invasion (PNI) as the predictive factors. The nomogram, incorporating all these predictors, showed good discrimination and calibration efficacy, with the areas under the ROC curve of 0.690 (95% CI: 0.610-0.771). Both DCA and CIC demonstrated that this nomogram has good clinical usefulness. CONCLUSION The nomogram model can predict RLNM in patients with ypT0-2 tumors. It can help select suitable patients for performing organ-preserving strategies after NCRT.
Collapse
Affiliation(s)
- Yujun Cui
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiation Oncology, Peking University Cancer Hospital and Institute, Beijing, 100142, China
| | - Maxiaowei Song
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiation Oncology, Peking University Cancer Hospital and Institute, Beijing, 100142, China
| | - Jian Tie
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiation Oncology, Peking University Cancer Hospital and Institute, Beijing, 100142, China
| | - Shuai Li
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiation Oncology, Peking University Cancer Hospital and Institute, Beijing, 100142, China
| | - Hongzhi Wang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiation Oncology, Peking University Cancer Hospital and Institute, Beijing, 100142, China
| | - Yangzi Zhang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiation Oncology, Peking University Cancer Hospital and Institute, Beijing, 100142, China
| | - Jianhao Geng
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiation Oncology, Peking University Cancer Hospital and Institute, Beijing, 100142, China
| | - Zhiyan Liu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiation Oncology, Peking University Cancer Hospital and Institute, Beijing, 100142, China
| | - Huajing Teng
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiation Oncology, Peking University Cancer Hospital and Institute, Beijing, 100142, China
| | - Xin Sui
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiation Oncology, Peking University Cancer Hospital and Institute, Beijing, 100142, China
| | - Xianggao Zhu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiation Oncology, Peking University Cancer Hospital and Institute, Beijing, 100142, China
| | - Yong Cai
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiation Oncology, Peking University Cancer Hospital and Institute, Beijing, 100142, China
| | - Yongheng Li
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiation Oncology, Peking University Cancer Hospital and Institute, Beijing, 100142, China.
| | - Weihu Wang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiation Oncology, Peking University Cancer Hospital and Institute, Beijing, 100142, China.
| |
Collapse
|
5
|
Xu ZW, Zhu JT, Bai HY, Yu XJ, Hong QQ, You J. Clinical efficacy and pathological outcomes of transanal endoscopic intersphincteric resection for low rectal cancer. World J Gastrointest Oncol 2024; 16:933-944. [PMID: 38577453 PMCID: PMC10989362 DOI: 10.4251/wjgo.v16.i3.933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 11/05/2023] [Accepted: 12/29/2023] [Indexed: 03/12/2024] Open
Abstract
BACKGROUND Transanal endoscopic intersphincteric resection (ISR) surgery currently lacks sufficient clinical research and reporting. AIM To investigate the clinical effectiveness of transanal endoscopic ISR, in order to promote the clinical application and development of this technique. METHODS This study utilized a retrospective case series design. Clinical and pathological data of patients with lower rectal cancer who underwent transanal endoscopic ISR at the First Affiliated Hospital of Xiamen University between May 2018 and May 2023 were included. All patients underwent transanal endoscopic ISR as the surgical approach. We conducted this study to determine the perioperative recovery status, postoperative complications, and pathological specimen characteristics of this group of patients. RESULTS This study included 45 eligible patients, with no perioperative mortalities. The overall incidence of early complications was 22.22%, with a rate of 4.44% for Clavien-Dindo grade ≥ III events. Two patients (4.4%) developed anastomotic leakage after surgery, including one case of grade A and one case of grade B. Postoperative pathological examination confirmed negative circumferential resection margins and distal resection margins in all patients. The mean distance between the tumor lower margin and distal resection margin was found to be 2.30 ± 0.62 cm. The transanal endoscopic ISR procedure consistently yielded high quality pathological specimens. CONCLUSION Transanal endoscopic ISR is safe, feasible, and provides a clear anatomical view. It is associated with a low incidence of postoperative complications and favorable pathological outcomes, making it worth further research and application.
Collapse
Affiliation(s)
- Zhi-Wen Xu
- Department of Gastrointestinal Oncology Surgery, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361000, Fujian Province, China
| | - Jing-Tao Zhu
- Department of Gastrointestinal Oncology Surgery, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361000, Fujian Province, China
| | - Hao-Yu Bai
- Department of Gastrointestinal Oncology Surgery, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361000, Fujian Province, China
| | - Xue-Jun Yu
- Department of Gastrointestinal Oncology Surgery, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361000, Fujian Province, China
| | - Qing-Qi Hong
- Department of Gastrointestinal Oncology Surgery, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361000, Fujian Province, China
| | - Jun You
- Department of Gastrointestinal Oncology Surgery, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361000, Fujian Province, China
| |
Collapse
|
6
|
Xu X, Zhong H, You J, Ren M, Fingerhut A, Zheng M, Li J, Yang X, Song H, Zhang S, Ding C, Abuduaini N, Yu M, Liu J, Zhang Y, Kang L, Cai Z, Feng B. Revolutionizing sphincter preservation in ultra-low rectal cancer: exploring the potential of transanal endoscopic intersphincteric resection (taE-ISR): a propensity score-matched cohort study. Int J Surg 2024; 110:709-720. [PMID: 38016136 PMCID: PMC10871607 DOI: 10.1097/js9.0000000000000945] [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: 07/20/2023] [Accepted: 11/13/2023] [Indexed: 11/30/2023]
Abstract
BACKGROUND With the optimization of neoadjuvant treatment regimens, the indications for intersphincteric resection (ISR) have expanded. However, limitations such as unclear surgical field, impaired anal function, and failure of anal preservation still exist. Transanal total mesorectal excision can complement the drawbacks of ISR. Therefore, this study combined these two techniques and proposed transanal endoscopic intersphincteric resection (taE-ISR), aiming to explore the value of this novel technique in anal preservation for ultra-low rectal cancer. MATERIAL AND METHODS Four high-volume centres were involved. After 1:1 propensity score-matching, patients with ultra-low rectal cancer underwent taE-ISR ( n =90) or ISR ( n =90) were included. Baseline characteristics, perioperative outcomes, pathological results, and follow-up were compared between the two groups. A nomogram model was established to assess the potential risks of anal preservation. RESULTS The incidence of adjacent organ injury (0.0% vs. 5.6%, P =0.059), positive distal resection margin (1.1% vs. 8.9%, P =0.034), and incomplete specimen (2.2% vs. 13.3%, P =0.012) were lower in taE-ISR group. Moreover, the anal preservation rate was significantly higher in taE-ISR group (97.8% vs. 82.2%, P =0.001). Patients in the taE-ISR group showed a better disease-free survival ( P =0.044) and lower cumulative recurrence ( P =0.022) compared to the ISR group. Surgery procedure, tumour distance, and adjacent organ injury were factors influencing anal preservation in patients with ultra-low rectal cancer. CONCLUSION taE-ISR technique was safe, feasible, and improved surgical quality, anal preservation rate and survival outcomes in ultra-low rectal cancer patients. It held significant clinical value and showed promising application prospects for anal preservation.
Collapse
Affiliation(s)
- Ximo Xu
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of General Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai
| | - Hao Zhong
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jun You
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Xiamen University, Teaching Hospital of Fujian Medical University, Xiamen
| | - Mingyang Ren
- Department of Gastrointestinal Surgery, The Affiliated Nanchong Central Hospital of North Sichuan Medical College, Nanchong
| | - Abe Fingerhut
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Section for Surgical Research, Department of Surgery, Medical University of Graz, Auenbruggerplatz 29, Graz, Austria
| | - Minhua Zheng
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jianwen Li
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiao Yang
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Haiqin Song
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Sen Zhang
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Chengsheng Ding
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Naijipu Abuduaini
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Mengqin Yu
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jingyi Liu
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yi Zhang
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Liang Kang
- Department of General Surgery (Colorectal Surgery)
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Zhenghao Cai
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Bo Feng
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| |
Collapse
|
7
|
Liu F, Zhang B, Xiang J, Zhuo G, Zhao Y, Zhou Y, Ding J. Does anastomotic leakage after intersphincteric resection for ultralow rectal cancer influence long-term outcomes? A retrospective observational study. Langenbecks Arch Surg 2023; 408:394. [PMID: 37816844 DOI: 10.1007/s00423-023-03131-9] [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: 05/18/2023] [Accepted: 10/02/2023] [Indexed: 10/12/2023]
Abstract
PURPOSE To determine whether anastomotic leakage (AL) following intersphincteric resection (ISR) for ultralow rectal cancer (uLRC) is associated with long-term negative outcomes. METHODS Between June 2011 and January 2022, 236 consecutive patients who underwent ISR with diverting ileostomy for uLRC were included. The primary outcome was long-term clinical consequences of AL, including chronic stricture, stoma reversal, and oncological and functional results. RESULTS Forty-one (17.4%) patients developed symptomatic AL, whereas only two (0.8%) required re-laparotomy due to severe leakage. Patients with leaks had a significantly increased incidence of chronic stricture (29.3% vs. 8.7%, P = 0.001) and stoma non-reversal (34.1% vs. 4.6%, P < 0.0001) than controls. The severe consequences were particularly common in patients with anastomotic separation, resulting in 60% of those presenting with chronic stricture and 50% ending up with stoma non-reversal. After a median follow-up of 59 (range, 7-139) months, AL did not compromise long-term oncological outcomes, including tumor recurrence (9.8% vs. 5.6%, P = 0.3), 5-year disease-free, and overall survival (73.4% vs. 74.8% and 85.1% vs. 85.4%, P = 0.56 and P = 0.55). A total of 149 patients with bowel continuity who completed self-assessment questionnaires were enrolled for functional evaluation. The median follow-up was 24 (range, 12-94) months after ileostomy reversal, and functional results were comparable between patients with and without leaks. CONCLUSION AL is an unfortunate reality for patients who underwent ISR for uLRC, but the rate of severe leakage is limited. Leaks contribute to possible adverse impacts on chronic stricture and stoma non-reversal, especially for patients with anastomotic separation. However, long-term oncological and functional results may not be compromised. TRIAL REGISTRATION Chictr.org.cn identifier: ChiCTR-ONC-15007506 and ChiCTR2100051614.
Collapse
Affiliation(s)
- Feifan Liu
- Postgraduate Training Base of Jinzhou Medical University, the Characteristic Medical Center of PLA Rocket Force, Beijing, 100088, China
- Department of Colorectal Surgery, the Characteristic Medical Center of PLA Rocket Force, Beijing, 100088, China
| | - Bin Zhang
- Department of Colorectal Surgery, the Characteristic Medical Center of PLA Rocket Force, Beijing, 100088, China
| | - Jianbin Xiang
- Department of General Surgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Guangzuan Zhuo
- Department of Colorectal Surgery, the Characteristic Medical Center of PLA Rocket Force, Beijing, 100088, China
| | - Yujuan Zhao
- Department of Colorectal Surgery, the Characteristic Medical Center of PLA Rocket Force, Beijing, 100088, China
| | - Yiming Zhou
- Department of General Surgery, Huashan Hospital, Fudan University, Shanghai, China
| | - Jianhua Ding
- Department of Colorectal Surgery, the Characteristic Medical Center of PLA Rocket Force, Beijing, 100088, China.
| |
Collapse
|
8
|
Martellucci J, Balestri R, Brusciano L, Iacopini V, Puccini M, Docimo L, Cianchi F, Buccianti P, Prosperi P. Ileostomy versus colostomy: impact on functional outcomes after total mesorectal excision for rectal cancer. Colorectal Dis 2023; 25:1686-1693. [PMID: 37461265 DOI: 10.1111/codi.16657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Revised: 05/06/2023] [Accepted: 06/01/2023] [Indexed: 08/17/2023]
Abstract
AIM Even if a defunctioning stoma mitigates the serious consequences of anastomotic leakage after total mesorectal excision (TME) for rectal cancer, the presence of a temporary stoma or having a stoma for a prolonged period of time may also be a determining factor for further morbidities and poor bowel function. The aim of this study was to evaluate the impact of diverting stomas on clinical and functional outcomes after TME, comparing ileostomy or colostomy effects. METHODS All consecutive patients who underwent TME for rectal cancer between March 2017 and December 2020 in three Italian referral centres were enrolled in the present study. For every patient sex, age, stage of the tumour, neoadjuvant therapy, surgical technique, anastomotic technique, the presence of a diverting stoma, perioperative complications and functional postoperative status were recorded. Considering the diverting stoma, the kind of stoma, length of time before closure and stoma related complications were evaluated. RESULTS During the study period 416 consecutive patients (63% men) were included. Preoperative neoadjuvant therapy was performed in 79%. A minimally invasive approach was performed in >95% of patients. Temporary stoma was performed during the operation in 387 patients (93%) (ileostomy 71%, colostomy 21%). The stoma was closed in 84% of patients. The median time from surgery to stoma closure was 145 days. No difference was found between ileostomy and colostomy in overall morbidity after stoma creation and closure. Moreover, increased postoperative functional disturbance seemed to be significantly proportional to the attending time for closure for ileostomy. CONCLUSION The presence of a defunctioning stoma seems to have a negative impact on functional bowel activity, especially for delayed closure for ileostomy. This should be considered when the kind of stoma (ileostomy vs. colostomy) is selected for each patient.
Collapse
Affiliation(s)
- Jacopo Martellucci
- General, Emergency and Minimally Invasive Surgery, Careggi University Hospital, Florence, Italy
| | | | - Luigi Brusciano
- Department of Medical, Surgical, Neurologic, Metabolic and Aging Sciences, General, Mini-invasive and Obesity Surgery Unit, University of Campania 'Luigi Vanvitelli', Naples, Italy
| | - Veronica Iacopini
- General, Emergency and Minimally Invasive Surgery, Careggi University Hospital, Florence, Italy
| | - Marco Puccini
- General Surgery Unit, Cisanello University Hospital, Pisa, Italy
| | - Ludovico Docimo
- Department of Medical, Surgical, Neurologic, Metabolic and Aging Sciences, General, Mini-invasive and Obesity Surgery Unit, University of Campania 'Luigi Vanvitelli', Naples, Italy
| | - Fabio Cianchi
- Digestive Surgery, Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Piero Buccianti
- General Surgery Unit, Cisanello University Hospital, Pisa, Italy
| | - Paolo Prosperi
- General, Emergency and Minimally Invasive Surgery, Careggi University Hospital, Florence, Italy
| |
Collapse
|
9
|
Zhang B, Zhuo GZ, Zhao Y, Zhao YJ, Zhu J, Liu FF, Ding JH. Quality of Life and Functional Outcomes After Intersphincteric Resection for Ultralow Rectal Cancer: A Prospective Observational Study. Dis Colon Rectum 2023; 66:1029-1038. [PMID: 36602458 DOI: 10.1097/dcr.0000000000002615] [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: 01/06/2023]
Abstract
BACKGROUND Intersphincteric resection is the ultimate sphincter-preserving surgical technique for ultralow rectal cancer, but quality-of-life changes after surgery remain unclear. It is also unknown which questionnaire has better associations with functional results for capturing clinical variation in quality of life. OBJECTIVE This study aimed to assess change in the quality of life and its correlation with functional outcomes among patients undergoing intersphincteric resection for ultralow rectal cancer. DESIGN This was a prospective, observational, single-center study. SETTINGS Colorectal surgery referral center. PATIENTS Patients with ultralow rectal cancer who underwent intersphincteric resection were included. MAIN OUTCOME MEASURES The primary outcomes were quality-of-life and functional results at 3 to 6, 12, and 24 months after ileostomy closure using validated questionnaires. The secondary outcome was the relationship between quality of life and neorectal function. RESULTS A total of 102 patients (62.7% men) completed follow-up surveys. Wexner incontinence score and Kirwan's incontinence score significantly improved at 12 months after ileostomy reversal, but such improvement in low anterior resection syndrome score was proved until 24 months later ( p = 0.01). Condition-specific quality-of-life domains improved over time, with significant changes in lifestyle ( p = 0.02) and coping/behavior ( p = 0.01), as well as the summary score of Fecal Incontinence Quality of Life ( p = 0.02) and visual analog scale score ( p < 0.001). Among health-related quality-of-life domains, the subscale scores did not differ significantly. The functional systems scores were significantly correlated with all the domains of condition-specific quality-of-life but only a few health-related quality-of-life domains. Only weak to moderate associations with the functional outcomes were observed for both quality-of-life questionnaires. LIMITATIONS Single-center data and limited sample size. CONCLUSIONS Although low anterior resection syndrome persists for years after intersphincteric resection, condition-specific quality of life and functional outcomes improve over time. Compared to health-related quality-of-life questionnaires, condition-specific quality-of-life instruments might be preferable to evaluate changes in quality-of-life after surgery. See Video Abstract at http://links.lww.com/DCR/C130 . CALIDAD DE VIDA Y RESULTADOS FUNCIONALES DESPUS DE UNA RESECCIN INTERESFINTRICA EN CASO DE CNCER RECTAL ULTRABAJO ESTUDIO PROSPECTIVO OBSERVACIONAL ANTECEDENTES:La resección inter-esfintérica es la última técnica quirúrgica conservadora de esfínteres en casos de cáncer rectal ultrabajo, pero los cambios en la calidad de vida después de la cirugía siguen sin estar claros. Se desconoce también, qué tipo de cuestionario tiene mejor asociación con los resultados funcionales para así captar las variaciones clínicas en la calidad de vida.OBJETIVO:Evaluar el cambio en la calidad de vida y su correlación con los resultados funcionales durante el período postoperatorio en pacientes sometidos a resección interesfintérica por cáncer de recto ultrabajo.DISEÑO:Estudio prospectivo, observacional y de un solo centro.AJUSTES:Centro de referencia de cirugía colorrectal.PACIENTES:Se incluyeron pacientes con cáncer de recto ultra bajo que se sometieron a resección interesfintérica con el cierre de la ileostomía.PRINCIPALES MEDIDAS DE RESULTADO:El resultado primario fue la calidad de vida y los resultados funcionales a los 3-6, 12 y 24 meses después del cierre de la ileostomía utilizando cuestionarios validados. El resultado secundario fue la relación entre la calidad de vida y la función del néorecto.RESULTADOS:Un total de 102 pacientes (62,7% hombres) completaron las encuestas de seguimiento. La puntuación de incontinencia de Wexner y la puntuación de incontinencia de Kirwan mejoraron significativamente a los 12 meses después del cierre de la ileostomía, pero dicha mejoría en la puntuación del síndrome de resección anterior baja se demostró solo hasta 24 meses después ( p = 0,01). Las condiciones en el dominio de la calidad de vida específicos mejoraron con el tiempo, con cambios significativos en el estilo de vida ( p = 0,02) y el afrontamiento/comportamiento ( p = 0,01), así como la puntuación general de la calidad de vida y de la incontinencia fecal ( p = 0,02), puntuación de la escala analógica visual ( p < 0,001). Entre los dominios de la calidad de vida relacionada con la salud, las puntuaciones de las sub-escalas no difirieron significativamente. Las puntuaciones de los sistemas funcionales se correlacionaron significativamente con todos los dominios de la calidad de vida específica de la nueva condición, pero solo con pocos dominios de calidad de vida relacionados con la salud. Solo se observaron asociaciones débiles a moderadas con los resultados funcionales para ambos cuestionarios de calidad de vida.LIMITACIONES:Datos de un solo centro y tamaño de muestra limitado.CONCLUSIONES:Aunque el síndrome de resección anterior baja persiste durante años después de la resección interesfintérica, la calidad de vida específica de la nueva condición y los resultados funcionales mejoran con el tiempo. En comparación con los cuestionarios de calidad de vida relacionados con la salud, los instrumentos de calidad de vida específicos de la nueva condición pueden ser preferibles para evaluar los cambios en la calidad de vida después de la cirugía. Consulte Video Resumen en http://links.lww.com/DCR/C130 . (Traducción-Dr. Xavier Delgadillo ).
Collapse
Affiliation(s)
- Bin Zhang
- Department of Colorectal Surgery, Characteristic Medical Center of PLA Rocket Force, Beijing, China
| | - Guang-Zuan Zhuo
- Department of Colorectal Surgery, Characteristic Medical Center of PLA Rocket Force, Beijing, China
| | - Yong Zhao
- Department of Colorectal Surgery, Characteristic Medical Center of PLA Rocket Force, Beijing, China
| | - Yu-Juan Zhao
- Department of Colorectal Surgery, Characteristic Medical Center of PLA Rocket Force, Beijing, China
- Postgraduate Training Base of Jinzhou Medical University, Characteristic Medical Center of PLA Rocket Force, Beijing, China
| | - Jun Zhu
- Department of Colorectal Surgery, Characteristic Medical Center of PLA Rocket Force, Beijing, China
| | - Fei-Fan Liu
- Department of Colorectal Surgery, Characteristic Medical Center of PLA Rocket Force, Beijing, China
- Postgraduate Training Base of Jinzhou Medical University, Characteristic Medical Center of PLA Rocket Force, Beijing, China
| | - Jian-Hua Ding
- Department of Colorectal Surgery, Characteristic Medical Center of PLA Rocket Force, Beijing, China
| |
Collapse
|
10
|
Sheng N, Yan J, Wang Z, Wu Z. Nomogram for predicting the probability of permanent stoma in patients with acute obstructive colorectal cancer. Langenbecks Arch Surg 2023; 408:121. [PMID: 36920537 DOI: 10.1007/s00423-023-02859-8] [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: 01/13/2023] [Accepted: 03/07/2023] [Indexed: 03/16/2023]
Abstract
BACKGROUND Acute obstructive colorectal cancer is a high-risk emergency among colorectal cancer (CRC). Approximately 20% of CRC patients are associated with a permanent stoma, which greatly affects the lifestyle of patients. This study aimed to investigate risk factors for predicting permanent stoma (PS) in patients with acute obstructive colorectal cancer. METHODS We retrospectively analyzed the clinical-pathological features of patients with acute obstructive colorectal cancer who underwent treatments from our hospital between January 2015 and December 2020. Univariate and multivariate logistic regression analyses were used to evaluate the risk factors for predicting PS chances of CRC patients using a nomogram method. Furthermore, the operating characteristic (ROC) curve and area under the ROC curve (AUC) were used to assess the discrimination power of the nomogram. Calibration plot was used to evaluate nomogram's calibration. RESULTS A total of 98 patients with acute obstructive colorectal cancer were enrolled in this study, including 24 PS patients with permanent stoma and 74 non-PS patients. Multivariate analysis showed that age [odds ratio (OR): 1.068, 95% confidence interval (CI): 1.006 ~ 1.135, P = 0.032], carcinoembryonic antigen (CEA) [OR: 1.015, 95% CI: 1.003 ~ 1.028, P = 0.013], and surgical method [emergency group vs. stent group, OR: 14.066, 95% CI: 3.625 ~ 54.572, p < 0.001] were independent risk factors for PS. These risk factors were incorporated into a nomogram and showed that the AUC of the nomogram was 0.867 (95% CI: 0.782-0.951). The calibration plot got consistent with prediction for PS in the nomogram. CONCLUSION Age, CEA, and surgical method were independent risk factors for PS in patients with acute obstructive colorectal cancer. Our nomogram has favorable predictive power for PS in CRC patients.
Collapse
Affiliation(s)
- Nengquan Sheng
- Department of General Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai, 200233, China
| | - Jun Yan
- Department of General Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai, 200233, China
| | - Zhigang Wang
- Department of General Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai, 200233, China
| | - Zhenqian Wu
- Department of General Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai, 200233, China.
| |
Collapse
|
11
|
Flor-Lorente B, Noguera-Aguilar JF, Delgado-Rivilla S, García-González JM, Rodriguez-Martín M, Salinas-Ortega L, Casado MÁ, Álvarez M. The economic impact of anastomotic leak after colorectal cancer surgery. HEALTH ECONOMICS REVIEW 2023; 13:12. [PMID: 36795234 PMCID: PMC9933261 DOI: 10.1186/s13561-023-00425-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 02/08/2023] [Indexed: 06/18/2023]
Abstract
OBJECTIVE To determine the economic impact of the incremental consumption of resources for the diagnosis and treatment of anastomotic leak (AL) in patients after resection with anastomosis for colorectal cancer compared to patients without AL on the Spanish health system. METHOD This study included a literature review with parameters validated by experts and the development of a cost analysis model to estimate the incremental resource consumption of patients with AL versus those without. The patients were divided into three groups: 1) colon cancer (CC) with resection, anastomosis and AL; 2) rectal cancer (RC) with resection, anastomosis without protective stoma and AL; and 3) RC with resection, anastomosis with protective stoma and AL. RESULTS The average total incremental cost per patient was €38,819 and €32,599 for CC and RC, respectively. The cost of AL diagnosis per patient was €1018 (CC) and €1030 (RC). The cost of AL treatment per patient in Group 1 ranged from €13,753 (type B) to €44,985 (type C + stoma), that in Group 2 ranged from €7348 (type A) to €44,398 (type C + stoma), and that in Group 3 ranged from €6197 (type A) to €34,414 (type C). Hospital stays represented the highest cost for all groups. In RC, protective stoma was found to minimize the economic consequences of AL. CONCLUSIONS The appearance of AL generates a considerable increase in the consumption of health resources, mainly due to an increase in hospital stays. The more complex the AL, the higher the cost associated with its treatment. INTEREST OF THE STUDY: it is the first cost-analysis study of AL after CR surgery based on prospective, observational and multicenter studies, with a clear, accepted and uniform definition of AL and estimated over a period of 30 days.
Collapse
Affiliation(s)
- Blas Flor-Lorente
- Colorectal Surgery Unit. Hospital Universitario y Politécnico La Fe, Valencia, Spain
| | | | | | | | | | | | | | - María Álvarez
- Health Economics & Outcomes Research Unit (Medtronic Ibérica, S.A.), Madrid, Spain.
| |
Collapse
|
12
|
Varela C, Kim NK. Surgical Treatment of Low-Lying Rectal Cancer: Updates. Ann Coloproctol 2021; 37:395-424. [PMID: 34961303 PMCID: PMC8717072 DOI: 10.3393/ac.2021.00927.0132] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 11/17/2021] [Indexed: 02/07/2023] Open
Abstract
Despite innovative advancements, distally located rectal cancer remains a critical disease of challenging management. The crucial location of the tumor predisposes it to a circumferential resection margin (CRM) that tends to involve the anal sphincter complex and surrounding organs, with a high incidence of delayed anastomotic complications and the risk of the pelvic sidewall or rarely inguinal lymph node metastases. In this regard, colorectal surgeons should be aware of other issues beyond total mesorectal excision (TME) performance. For decades, the concept of extralevator abdominoperineal resection to avoid compromised CRM has been introduced. However, the complexity of deep pelvic dissection with poor visualization in low-lying rectal cancer has led to transanal TME. In contrast, neoadjuvant chemoradiotherapy (NCRT) has allowed for the execution of more sphincter-saving procedures without oncologic compromise. Significant tumor regression after NCRT and complete pathologic response also permit applying the watch-and-wait protocol in some cases, now with more solid evidence. This review article will introduce the current surgical treatment options, their indication and technical details, and recent oncologic and functional outcomes. Lastly, the novel characteristics of distal rectal cancer, such as pelvic sidewall and inguinal lymph node metastases, will be discussed along with its tailored and individualized treatment approach.
Collapse
Affiliation(s)
- Cristopher Varela
- Coloproctology Unit, Department of General Surgery, Hospital Dr. Domingo Luciani, Caracas, Venezuela
| | - Nam Kyu Kim
- Department of Surgery, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| |
Collapse
|