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Zhao K, Li H, Pang W, Zhao X, Zhang B, Fen Z, Jin L, Xue J, Chu T, Yan S, Wang W, Han Q, Yao Y, Zhang X, Su X, Zhang C. Influence of High-Risk Pathological Factors and their Interaction on the Survival Benefit of Adjuvant Chemotherapy in Stage II Rectal Cancer: A Retrospective Study. J Cancer 2024; 15:3531-3538. [PMID: 38817859 PMCID: PMC11134436 DOI: 10.7150/jca.95769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Accepted: 04/16/2024] [Indexed: 06/01/2024] Open
Abstract
Objectives: We investigated the impact of high-risk factors in stage II (TNM stage) rectal cancer patients to determine whether they benefit from adjuvant chemotherapy after surgery. Additionally, we explored the interaction between high-risk factors and adjuvant chemotherapy. Our study provides refined guidance for postoperative treatment in patients with stage II rectal cancer. Methods: The retrospective study included 570 stage II rectal adenocarcinoma patients who underwent total mesorectal excision surgery at Tianjin Union Medical Center from August 2012 to July 2019. We employed Cox regression models to assess the collected pathological and clinical factors, identifying the risk factors for overall survival (OS) and disease-free survival (DFS). Additionally, we thoroughly examined the interaction between various high-risk pathological factors and postoperative chemotherapy (ACT), including multiplicative interaction (INTM) and additive interaction (RERI). Results: Among the 570 stage II rectal cancer patients in this study, the average age was 62 years, with 58.9% (N=336) of the population being older than 60. Males accounted for the majority at 64.9% (N=370). Age was found to have an impact on whether patients received adjuvant chemotherapy after surgery (P<=0.001).Furthermore, age (HR: 1.916, 95% CI: 1.158-3.173, P=0.011; HR: 1.881, 95% CI: 1.111-3.186, P=0.019), TNM stage (HR: 2.216, 95% CI: 1.003-4.897, P=0.029; HR: 2.276, 95% CI: 1.026-5.048, P=0.043), the number of lymph nodes cleared during surgery (HR: 1.968, 95% CI: 1.112-3.483, P=0.017; HR: 1.864, 95% CI: 0.995-3.493, P=0.045), and lymphovascular invasion (HR: 2.864, 95% CI: 1.567-5.232, P=0.001; HR: 3.161, 95% CI: 1.723-5.799, P<0.001) were identified as independent risk factors for patients' overall survival (OS) and disease-free survival (DFS). Moreover, the interaction analysis, both multiplicative and additive, revealed significant interactions between the number of lymph nodes cleared during surgery and the administration of adjuvant chemotherapy. For OS (HR for multiplicative interaction: 0.477, p=0.045; RERI: -0.531, 95% CI: -1.061, -0.002) and for DFS (HR for multiplicative interaction: 0.338, p=0.039; RERI: -1.097, 95% CI: -2.190, -0.005). Conclusions: This study provides insights into the complex relationship between adjuvant chemotherapy (ACT) and survival outcomes in stage II rectal cancer patients with high-risk pathological factors. The findings suggest that the number of cleared lymph nodes plays a significant role in the efficacy of ACT and underscores the need for individualized treatment decisions in this patient population.
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Affiliation(s)
- Kailong Zhao
- School of Medicine, Nankai University, Tianjin, China
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, China
| | - Hongzhou Li
- Department of Gastroenterology, Tianjin Union Medical Center, Tianjin, China
| | - Wenwen Pang
- Department of clinical laboratory, Tianjin Union Medical Center, Tianjin, China
| | - Xuanzhu Zhao
- Tianjin Academy of Traditional Chinese Medicine Affiliated Hospital, Tianjin, China
| | - Baofeng Zhang
- Department of Gastroenterology, Tianjin Union Medical Center, Tianjin, China
| | - Zhiqiang Fen
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, China
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Leixin Jin
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, China
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Jun Xue
- Department of General Surgery, The First Affiliated Hospital of Hebei North University, Hebei, China
| | - Tianhao Chu
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, China
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Suying Yan
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, China
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Wanting Wang
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, China
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Qiurong Han
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, China
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Yao Yao
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, China
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Xipeng Zhang
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, China
- The Institute of Translational Medicine, Tianjin Union Medical Center, Tianjin, China
- Tianjin Institute of Coloproctology, Tianjin, China
| | - Xiaomin Su
- Department of Immunology, Nankai University School of Medicine, Nankai University, Tianjin, China
| | - Chunze Zhang
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, China
- The Institute of Translational Medicine, Tianjin Union Medical Center, Tianjin, China
- Tianjin Institute of Coloproctology, Tianjin, China
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Mroczkowski P, Dziki Ł, Vosikova T, Otto R, Merecz-Sadowska A, Zajdel R, Zajdel K, Lippert H, Jannasch O. Rectal Cancer: Are 12 Lymph Nodes the Limit? Cancers (Basel) 2023; 15:3447. [PMID: 37444557 DOI: 10.3390/cancers15133447] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 06/18/2023] [Accepted: 06/29/2023] [Indexed: 07/15/2023] Open
Abstract
Lymph node dissection is a crucial element of oncologic rectal surgery. Many guidelines regard the removal of at least 12 lymph nodes as the quality criterion in rectal cancer. However, this recommendation remains controversial. This study examines the factors influencing the lymph node yield and the validity of the 12-lymph node limit. Patients with rectal cancer who underwent low anterior resection or abdominoperineal amputation between 2000 and 2010 were analyzed. In total, 20,966 patients from 381 hospitals were included. Less than 12 lymph nodes were found in 20.53% of men and 19.31% of women (p = 0.03). The number of lymph nodes yielded increased significantly from 2000, 2005 and 2010 within the quality assurance program for all procedures. The univariate analysis indicated a significant (p < 0.001) correlation between lymph node yield and gender, age, pre-therapeutic T-stage, risk factors and neoadjuvant therapy. The multivariate analyses found T3 stage, female sex, the presence of at least one risk factor and neoadjuvant therapy to have a significant influence on yield. The probability of finding a positive lymph node was proportional to the number of examined nodes with no plateau. There is a proportional relationship between the number of examined lymph nodes and the probability of finding an infiltrated node. Optimal surgical technique and pathological evaluation of the specimen cannot be replaced by a numeric cut-off value.
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Affiliation(s)
- Paweł Mroczkowski
- Department for General and Colorectal Surgery, Medical University of Lodz, Pl. Hallera 1, 90-647 Lodz, Poland
- Institute for Quality Assurance in Operative Medicine Ltd., Otto-von-Guericke-University, Leipziger Str. 44, D-39120 Magdeburg, Germany
- Department for Surgery, University Hospital Knappschaftskrankenhaus, Ruhr-University, In der Schornau 23-25, D-44892 Bochum, Germany
| | - Łukasz Dziki
- Department for General and Colorectal Surgery, Medical University of Lodz, Pl. Hallera 1, 90-647 Lodz, Poland
| | - Tereza Vosikova
- Institute for Quality Assurance in Operative Medicine Ltd., Otto-von-Guericke-University, Leipziger Str. 44, D-39120 Magdeburg, Germany
| | - Ronny Otto
- Institute for Quality Assurance in Operative Medicine Ltd., Otto-von-Guericke-University, Leipziger Str. 44, D-39120 Magdeburg, Germany
| | - Anna Merecz-Sadowska
- Department of Economic and Medical Informatics, University of Lodz, 90-214 Lodz, Poland
| | - Radosław Zajdel
- Department of Economic and Medical Informatics, University of Lodz, 90-214 Lodz, Poland
| | - Karolina Zajdel
- Department of Medical Informatics and Statistics, Medical University of Lodz, 90-645 Lodz, Poland
| | - Hans Lippert
- Institute for Quality Assurance in Operative Medicine Ltd., Otto-von-Guericke-University, Leipziger Str. 44, D-39120 Magdeburg, Germany
- Department for General, Visceral and Vascular Surgery, Otto-von-Guericke-University, Leipziger Str. 44, D-39120 Magdeburg, Germany
| | - Olof Jannasch
- Institute for Quality Assurance in Operative Medicine Ltd., Otto-von-Guericke-University, Leipziger Str. 44, D-39120 Magdeburg, Germany
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He L, Xiao J, Zheng P, Zhong L, Peng Q. Lymph node regression grading of locally advanced rectal cancer treated with neoadjuvant chemoradiotherapy. World J Gastrointest Oncol 2022; 14:1429-1445. [PMID: 36160739 PMCID: PMC9412927 DOI: 10.4251/wjgo.v14.i8.1429] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 04/30/2022] [Accepted: 07/06/2022] [Indexed: 02/05/2023] Open
Abstract
Neoadjuvant chemoradiotherapy (nCRT) and total rectal mesenteric excision are the main standards of treatment for locally advanced rectal cancer (LARC). Lymph node regression grade (LRG) is an indicator of prognosis and response to preoperative nCRT based on postsurgical metastatic lymph node pathology. Common histopathological findings in metastatic lymph nodes after nCRT include necrosis, hemorrhage, nodular fibrosis, foamy histiocytes, cystic cell reactions, areas of hyalinosis, residual cancer cells, and pools of mucin. A number of LRG systems designed to classify the amount of lymph node regression after nCRT is mainly concerned with the relationship between residual cancer cells and regressive fibrosis and with estimating the number of lymph nodes existing with residual cancer cells. LRG offers significant prognostic information, and in most cases, LRG after nCRT correlates with patient outcomes. In this review, we describe the systematic classification of LRG after nCRT, patient prognosis, the correlation with tumor regression grade, and the typical histopathological findings of lymph nodes. This work may serve as a reference to help predict the clinical complete response and determine lymph node regression in patients based on preservation strategies, allowing for the formulation of more accurate treatment strategies for LARC patients, which has important clinical significance and scientific value.
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Affiliation(s)
- Lei He
- School of Medicine, University of Electronic Science and Technology of China, Chengdu 611731, Sichuan Province, China
| | - Juan Xiao
- School of Medicine, University of Electronic Science and Technology of China, Chengdu 611731, Sichuan Province, China
| | - Ping Zheng
- Department of Pathology, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu 610041, Sichuan Province, China
| | - Lei Zhong
- Personalized Drug Therapy Key Laboratory of Sichuan Province, Sichuan Academy of Medical Sciences and Sichuan Provincial People’s Hospital, Chengdu 610072, Sichuan Province, China
| | - Qian Peng
- Radiation Therapy Center, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu 610041, Sichuan Province, China
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The Multidisciplinary Approach of Rectal Cancer: The Experience of "COMRE Group" Model. Diagnostics (Basel) 2022; 12:diagnostics12071571. [PMID: 35885477 PMCID: PMC9319737 DOI: 10.3390/diagnostics12071571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 06/14/2022] [Accepted: 06/27/2022] [Indexed: 11/23/2022] Open
Abstract
Background: Total mesorectal excision (TME) is the gold standard to treat locally advanced rectal cancer. This monocentric retrospective study evaluates the results of laparotomic, laparoscopic and robotic surgery in “COMRE GROUP” (REctalCOMmittee). Methods: 327 selected stage I-II-III patients (pts) underwent TME between November 2005 and April 2020 for low or middle rectal cancer; 91 pts underwent open, 200 laparoscopic and 36 robotic TME. Of these, we analyzed the anthropomorphic, intraoperative, anatomopathological parameters and outcome during the follow up. Results: The length of hospital stay was significantly different between robotic TME and the other two groups (8.47 ± 3.54 days robotic vs. 11.93 ± 5.71 laparotomic, p < 0.001; 8.47 ± 3.54 robotic vs. 11.10 ± 7.99 laparoscopic, p < 0.05). The mean number of harvested nodes was higher in the laparotomic group compared to the other two groups (19 ± 9 laparotomic vs. 15 ± 8 laparoscopic, p < 0.001; 19 ± 9 laparotomic vs. 15 ± 7 robotic, p < 0.05). Median follow-up was 52 months (range: 1−169). Overall survival was significantly shorter in the open TME group compared with the laparoscopic one (Chi2 = 13.36, p < 0.001). Conclusions: In the experience of the “COMRE” group, laparoscopic TME for rectal cancer is a better choice than laparotomy in a multidisciplinary context. Robotic TME has a significant difference in terms of hospital stay compared to the other two groups.
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Prognostic Implications of Nodal Yield in Rectal Cancer After Neoadjuvant Therapy: Is Nodal Yield Still Relevant Post Neoadjuvant Therapy? Indian J Surg 2021. [DOI: 10.1007/s12262-021-03154-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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6
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Karjol U, Jonnada P, Chandranath A, Cherukuru S. Lymph Node Ratio as a Prognostic Marker in Rectal Cancer Survival: A Systematic Review and Meta-Analysis. Cureus 2020; 12:e8047. [PMID: 32399378 PMCID: PMC7216312 DOI: 10.7759/cureus.8047] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Introduction The lymph node ratio (LNR) is defined as the ratio of the number of positive lymph nodes to the total number of nodes retrieved. LNR has recently emerged as a prognostic factor in rectal cancer. The objective of our study was to pool eligible studies to elucidate the prognostic role of LNR on overall survival (OS) and disease-free survival (DFS) in rectal cancer patients using a meta-analysis. Methods A systematic database search was performed in MEDLINE and Embase for relevant studies that reported LNR in rectal cancer. Two authors independently screened the relevant articles for selection and data extraction. As a result, a list of such studies and references, published in English up to December 2019, was obtained, and a total of 4,486 node-positive patients in 18 studies were included in this meta-analysis. RevMan software 5.3 (Cochrane Collaboration, the Nordic Cochrane Centre, Copenhagen) was used for conducting all statistical analyses. Results A higher LNR was significantly correlated with worse OS [hazard ratio (HR): 2.60; 95% confidence interval (CI): 2.21-3.06; p≤.00001] and DFS (HR: 2.43; 95% CI: 2.11-2.80; p≤.00001) in node-positive rectal cancer patients. Besides, LNR is an independent predictive and prognostic marker of OS and DFS (HR: 2.52; 95% CI: 2.17-2.94; p≤.00001 with I2=0%; p=.32 and HR: 2.63; 95% CI: 2.17-3.18; p≤.00001 with I2=0%; p=.63 respectively, irrespective of lymph nodal harvest). Conclusions Our present study demonstrates that LNR is an independent predictor of survival in rectal cancer. LNR should be considered as a parameter in future oncological staging systems. Further well-designed randomized control trials to prospectively assess LNR as an independent predictor of rectal cancer survival are necessary before its application in daily practice.
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Affiliation(s)
- Uday Karjol
- Surgical Oncology, Kidwai Memorial Institute of Oncology, Bangalore, IND
| | - Pavan Jonnada
- Surgical Oncology, Kidwai Memorial Institute of Oncology, Bangalore, IND
| | - Ajay Chandranath
- Surgical Oncology, Kidwai Memorial Institute of Oncology, Bangalore, IND
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Narayanan S, Attwood K, Gabriel E, Nurkin S. Pathologic Complete Response Despite Nodal Yield Has Best Survival in Locally Advanced Rectal Cancer. J Surg Res 2020; 251:220-227. [PMID: 32172008 DOI: 10.1016/j.jss.2020.01.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 10/05/2019] [Accepted: 01/25/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND Controversy exists regarding the ability of neoadjuvant chemoradiation (nCR) to diminish lymph node yield (LNY) and how that relationship is influenced by tumor response in patients undergoing proctectomy for locally advanced rectal cancer. MATERIALS AND METHODS The National Cancer Database was used to identify patients with rectal adenocarcinomas from 2004 to 2014. Patients that received nCR were compared with those that underwent surgery alone. LNY was stratified into <12 and ≥12 groups to determine their differences in stage specific overall survival. RESULTS Of 56,812 patients 46.5% underwent surgery alone and 53.5% were administered nCR. There were more patients with LNY<12 in the nCR group compared to surgery alone, across all stages (44.1% versus 36.5%, P < 0.001). nCR improved OS regardless of LNY (P < 0.001). Although patients with LNY≥12 had improved overall survival, patients who had a pathologic complete response (pCR) achieved the greatest survival. In patients that did not achieve a pCR, LNY≥12 was a marker of improved OS but LNY did not impact OS in patients that attained pCR (P < 0.001). CONCLUSIONS Although nCR diminished LNY, LNY≥12 improved OS demonstrating the importance of quality total mesorectal excision. However, LNY did not impact patients that achieved pCR. These patients, who achieved the best OS, demonstrated that tumors' biologic response to nCR had the greatest impact on patient outcomes.
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Affiliation(s)
- Sumana Narayanan
- Department of Surgical Oncology, Mount Sinai Medical Center, Miami Beach, Florida
| | - Kristopher Attwood
- Department of Biostatistics and Bioinformatics, Roswell Park Comprehensive Cancer Center, Buffalo, New York
| | - Emmanuel Gabriel
- Department of Surgery, Section of Surgical Oncology, Mayo Clinic, Jacksonville, Florida
| | - Steven Nurkin
- Department of Surgical Oncology, Roswell Park Comprehensive Cancer Center, Buffalo, New York.
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Ferrando L, Cirmena G, Garuti A, Scabini S, Grillo F, Mastracci L, Isnaldi E, Marrone C, Gonella R, Murialdo R, Fiocca R, Romairone E, Ballestrero A, Zoppoli G. Development of a long non-coding RNA signature for prediction of response to neoadjuvant chemoradiotherapy in locally advanced rectal adenocarcinoma. PLoS One 2020; 15:e0226595. [PMID: 32023246 PMCID: PMC7001901 DOI: 10.1371/journal.pone.0226595] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 11/29/2019] [Indexed: 12/13/2022] Open
Abstract
Standard treatment for locally advanced rectal adenocarcinoma (LARC) includes a combination of chemotherapy with pyrimidine analogues, such as capecitabine, and radiation therapy, followed by surgery. Currently no clinically useful genomic predictors of benefit from neoadjuvant chemoradiotherapy (nCRT) exist for LARC. In this study we assessed the expression of 8,127 long noncoding RNAs (lncRNAs), poorly studied in LARC, to infer their ability in classifying patients’ pathological complete response (pCR). We collected and analyzed, using lncRNA-specific Agilent microarrays a consecutive series of 61 LARC cases undergoing nCRT. Potential lncRNA predictors in responders and non-responders to nCRT were identified with LASSO regression, and a model was optimized using k-fold cross-validation after selection of the three most informative lncRNA. 11 lncRNAs were differentially expressed with false discovery rate < 0.01 between responders and non-responders to NACT. We identified lnc-KLF7-1, lnc-MAB21L2-1, and LINC00324 as the most promising variable subset for classification building. Overall sensitivity and specificity were 0.91 and 0.94 respectively, with an AUC of our ROC curve = 0.93. Our study shows for the first time that lncRNAs can accurately predict response in LARC undergoing nCRT. Our three-lncRNA based signature must be independently validated and further analyses must be conducted to fully understand the biological role of the identified signature, but our results suggest lncRNAs may be an ideal biomarker for response prediction in the studied setting.
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Affiliation(s)
- Lorenzo Ferrando
- Department of Internal Medicine, Università degli Studi di Genova, Genova, Italy
| | - Gabriella Cirmena
- Department of Internal Medicine, Università degli Studi di Genova, Genova, Italy
| | - Anna Garuti
- Department of Internal Medicine, Università degli Studi di Genova, Genova, Italy
| | | | - Federica Grillo
- IRCSS Ospedale Policlinico San Martino, Genova, Italy
- Department of Integrated Surgical and Diagnostic Sciences, Università degli Studi di Genova, Genova, Italy
| | - Luca Mastracci
- IRCSS Ospedale Policlinico San Martino, Genova, Italy
- Department of Integrated Surgical and Diagnostic Sciences, Università degli Studi di Genova, Genova, Italy
| | - Edoardo Isnaldi
- Department of Internal Medicine, Università degli Studi di Genova, Genova, Italy
| | - Ciro Marrone
- IRCSS Ospedale Policlinico San Martino, Genova, Italy
| | - Roberta Gonella
- Department of Internal Medicine, Università degli Studi di Genova, Genova, Italy
- IRCSS Ospedale Policlinico San Martino, Genova, Italy
| | | | - Roberto Fiocca
- IRCSS Ospedale Policlinico San Martino, Genova, Italy
- Department of Integrated Surgical and Diagnostic Sciences, Università degli Studi di Genova, Genova, Italy
| | | | - Alberto Ballestrero
- Department of Internal Medicine, Università degli Studi di Genova, Genova, Italy
- IRCSS Ospedale Policlinico San Martino, Genova, Italy
- * E-mail: (AB); (GZ)
| | - Gabriele Zoppoli
- Department of Internal Medicine, Università degli Studi di Genova, Genova, Italy
- IRCSS Ospedale Policlinico San Martino, Genova, Italy
- * E-mail: (AB); (GZ)
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Shen F, Cui J, Cai K, Pan H, Bu H, Yu F. Prognostic accuracy of different lymph node staging systems in rectal adenocarcinoma with or without preoperative radiation therapy. Jpn J Clin Oncol 2018; 48:625-632. [PMID: 29788392 DOI: 10.1093/jjco/hyy070] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Accepted: 05/04/2018] [Indexed: 12/23/2022] Open
Abstract
Background and objective A variety of different lymph node (LN) staging systems have been developed to describe the lymph node status accurately. We aim to compare the prognostic accuracy of American Joint Committee on Cancer seventh N stage relative to negative number of lymph node (nLN), lymph node ratio (LNR) and log odds of metastatic lymph nodes (LODDS) in rectal adenocarcinoma (RC). Methods A total of 19 167 Stage II-III rectal cancer patients who underwent surgical resection of rectal adenocarcinoma were identified from Surveillance, Epidemiology and End Results database. Akaike's Information Criterion (AIC) and the Harrell's concordance index (c statistic) were used to evaluate the relative discriminative power of the different LN staging systems. Results Of the 19 167 patients, 10 958 received preoperative radiotherapy (pre-RT cohort) and 8209 patients were treated with surgical resection directly (SURG cohort). When assessed using categorical cutoff values, LNR has a somewhat better prognostic accuracy both in pre-RT (c-index: 0.62; AIC: 2988.6) and SURG groups (c-index: 0.60; AIC: 3359.8). Further analysis based on different total number of lymph node (TNLN) suggested that when less than 10 lymph nodes were retrieved, LNR exhibited significant superiority (pre-RT: c-index: 0.597, AIC: 1006.8; SURG: c-index: 0.560, AIC: 810.5). When analyzed as a continuous variable, the LODDS system performed the best and was not impacted by TNLN. Conclusion When assessed as a categorical variable, LNR was the most powerful method to predict survival for Stage II-III RC patients with limited TNLN. Rather, LODDS was the most accurate staging system regardless of the TNLN when LN status was modeled as continuous variable.
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Affiliation(s)
- Feng Shen
- Department of Colorectal Surgery, Tongde Hospital of Zhejiang Province, Hangzhou Zhejiang, China
| | - Junhui Cui
- Department of Colorectal Surgery, Tongde Hospital of Zhejiang Province, Hangzhou Zhejiang, China
| | - Ke Cai
- Department of Colorectal Surgery, Tongde Hospital of Zhejiang Province, Hangzhou Zhejiang, China
| | - Haiqiang Pan
- Department of Colorectal Surgery, Tongde Hospital of Zhejiang Province, Hangzhou Zhejiang, China
| | - Heqi Bu
- Department of Colorectal Surgery, Tongde Hospital of Zhejiang Province, Hangzhou Zhejiang, China
| | - Feng Yu
- Department of Colorectal Surgery, Tongde Hospital of Zhejiang Province, Hangzhou Zhejiang, China
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Wu SG, Zhang ZQ, Liu WM, He ZY, Li FY, Lin HX, Sun JY, Lin H, Li Q. Impact of the number of resected lymph nodes on survival after preoperative radiotherapy for esophageal cancer. Oncotarget 2017; 7:22497-507. [PMID: 26992210 PMCID: PMC5008376 DOI: 10.18632/oncotarget.8113] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Accepted: 02/24/2016] [Indexed: 01/28/2023] Open
Abstract
To assess the impact of the number of resected lymph nodes (RLNs) for survival in esophageal cancer (EC) patients treated with preoperative radiotherapy and cancer-directed surgery. The Surveillance Epidemiology and End Results (SEER) database was queried to identify EC patients treated from 1988 to 2012 who had complete data on the number of positive lymph nodes and number of RLNs. Kaplan–Meier survival analysis and Cox regression proportional hazard methods were used to determine factors that significantly impact cause-specific survival (CSS) and overall survival (OS). There were a total of 3,159 patients who received preoperative radiotherapy and cancer-directed surgery. The median number of RLNs was 10 in both patients who received and did not receive preoperative radiotherapy (P = 0.332). Cox regression univariate and multivariate analysis showed that RLN count was a significant prognostic factor for CSS and OS. Patients with 11–71 RLNs had better CSS (hazard ratio [HR] = 0.694, 95% confidence interval [CI]: 0.603–0.799, P < 0.001) and OS (HR = 0.724, 95% CI: 0.636–0.824, P < 0.001) than patients with 1–10 RLNs. The 5-year CSS rates were 39.1% and 44.8% in patients with 1–10 RLNs and 11–71 RLNs, respectively (P < 0.001). The 5-year OS rates were 33.7% and 39.9% in patients with 1–10 RLNs and 11–71 RLNs, respectively (P < 0.001). A higher number of RLNs was associated with better survival by tumor stage and nodal stage (all P < 0.05). RLN count is an independent prognostic factor in EC patients who undergo preoperative radiotherapy and cancer-directed surgery.
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Affiliation(s)
- San-Gang Wu
- Department of Radiation Oncology, the First Affiliated Hospital of Xiamen University, Xiamen 361003, People's Republic of China
| | - Zhao-Qiang Zhang
- Eye Institute of Xiamen University, Fujian Provincial Key Laboratory of Ophthalmology and Visual Science, Medical College of Xiamen University, Xiamen 361003, People's Republic of China
| | - Wen-Ming Liu
- Department of Gastroenterology, Zhongshan Hospital of Xiamen University, Xiamen 361003, People's Republic of China
| | - Zhen-Yu He
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Department of Radiation Oncology, Collaborative Innovation Center of Cancer Medicine, Guangzhou 510060, People's Republic of China
| | - Feng-Yan Li
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Department of Radiation Oncology, Collaborative Innovation Center of Cancer Medicine, Guangzhou 510060, People's Republic of China
| | - Huan-Xin Lin
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Department of Radiation Oncology, Collaborative Innovation Center of Cancer Medicine, Guangzhou 510060, People's Republic of China
| | - Jia-Yuan Sun
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Department of Radiation Oncology, Collaborative Innovation Center of Cancer Medicine, Guangzhou 510060, People's Republic of China
| | - Hui Lin
- Department of Cardiovascular and Thoracic Surgery, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, People's Republic of China
| | - Qun Li
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Department of Radiation Oncology, Collaborative Innovation Center of Cancer Medicine, Guangzhou 510060, People's Republic of China
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11
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Lymph node yield after rectal resection in patients treated with neoadjuvant radiation for rectal cancer: A systematic review and meta-analysis. Eur J Cancer 2016; 72:84-94. [PMID: 28027520 DOI: 10.1016/j.ejca.2016.10.031] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Revised: 10/05/2016] [Accepted: 10/19/2016] [Indexed: 02/06/2023]
Abstract
BACKGROUND The lymph node status represents a major prognostic factor in colorectal cancer. However, it was demonstrated that neoadjuvant chemoradiotherapy (CRT) decreases the numbers of lymph nodes in the specimen. Several studies describe less than 12 lymph nodes in the resected specimen of rectal cancer patients after neoadjuvant radiation. This meta-analysis quantifies the influence of neoadjuvant CRT or radiotherapy (RT) only on the lymph node yield in rectal cancer patients. METHODS We performed a systematic review and searched PubMed, EMBASE and the Cochrane Library without any language restriction from 1st of January 1980 until 31st March 2015. Two reviewers examined all publications independently and extracted the relevant data if the study assessed lymph node counts or positive lymph node yields of patients who received neoadjuvant treatment compared with patients who did not receive neoadjuvant treatment. Meta-analyses were conducted to quantify the mean difference in lymph node yield. RESULTS A total of 34 articles (including 37 datasets) were included in the meta-analyses. Neoadjuvant CRT resulted in a mean reduction of 3.9 lymph nodes (95% confidence interval [CI] 3.7-4.1) and an average reduction in harvested positive lymph nodes of 0.7 (95% CI 0.2-1.2) compared with patients who received no neoadjuvant therapy. Individuals who received neoadjuvant RT had, in average, 2.1 lymph node less (95% CI 1.7-2.5) resected compared with their counterparts who received no neoadjuvant treatment. CONCLUSIONS Neoadjuvant CRT or RT only in rectal cancer patients leads to a decrease in lymph node harvest of approximately four and two lymph nodes, respectively. We therefore stress the importance of intensifying all efforts from involved subspecialities (i.e. surgeons and pathologists) to reach the benchmark harvest of 12 resected lymph nodes according to current guidelines.
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12
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Han J, Noh GT, Yeo SA, Cheong C, Cho MS, Hur H, Min BS, Lee KY, Kim NK. The number of retrieved lymph nodes needed for accurate staging differs based on the presence of preoperative chemoradiation for rectal cancer. Medicine (Baltimore) 2016; 95:e4891. [PMID: 27661032 PMCID: PMC5044902 DOI: 10.1097/md.0000000000004891] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
The aim of this study is to investigate if retrieval of 12 lymph nodes (LNs) is sufficient to avoid stage migration as well as to evaluate the prognostic impact of insufficient LN retrieval in different treatment settings of rectal cancer, particularly in the case of preoperative chemoradiotherapy (pCRT).The data of all patients with biopsy proven rectal adenocarcinoma who underwent curative surgery between January 2005 and December 2012 were analyzed. Univariate and multivariate analyses for oncologic outcomes were performed in LN metastasis or no LN metastasis (LN-) group. Subgroup analyses were performed according to whether a patient had received pCRT.A total of 1825 patients were enrolled into the study. The maximal Chi-square method revealed the minimum number of harvested LNs required to be 12. Univariate and multivariate analyses found LNs ≥ 12 to be an independent prognostic factor for both overall survival (OS) (hazard ratio [HR] = 0.5, 95% confidence intervals [CIs]: 0.3-0.8; P = 0.002) and disease-free survival (DFS) (HR = 0.6, 95% CI: 0.4-0.7; P < 0.001) in the LN- group. In the LN- group, LNs ≥ 12 continued to be a significant prognostic factor both for OS and DFS in the subgroup of patients who did not undergo pCRT. However, in the subgroup of the LN- patients who underwent pCRT, LN ≥ 8 was significant for DFS and OS.Retrieval of LNs ≥ 12 and LNs ≥ 8 should be achieved to obtain accurate staging and optimal treatment for the non-pCRT and pCRT groups in rectal cancer, respectively.
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Affiliation(s)
| | | | | | | | | | | | - Byung Soh Min
- Department of Surgery, Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
- Correspondence: Byung Soh Min, Department of Surgery, Severance Hospital, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-Ku, 120-752 Seoul, South Korea (e-mail: )
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13
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Leonard D, Remue C, Abbes Orabi N, van Maanen A, Danse E, Dragean A, Debetancourt D, Humblet Y, Jouret-Mourin A, Maddalena F, Medina Benites A, Scalliet P, Sempoux C, Van den Eynde M, De Schoutheete JC, Kartheuser A. Lymph node ratio and surgical quality are strong prognostic factors of rectal cancer: results from a single referral centre. Colorectal Dis 2016; 18:O175-84. [PMID: 27128602 DOI: 10.1111/codi.13362] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Accepted: 02/11/2016] [Indexed: 02/08/2023]
Abstract
AIM Nodal stage is a strong prognostic factor of oncological outcome of rectal cancer. To compensate for the variation in total number of harvested nodes, calculation of the lymph node ratio (LNR) has been advocated. The aim of the study was to compare the impact, on the long-term oncological outcome, of the LNR with other predictive factors, including the quality of total mesorectal excision (TME) and the state of the circumferential resection margin. METHOD Consecutive patients having elective surgery for nonmetastatic rectal cancer were extracted from a prospectively maintained database. Retrospective uni- and multivariate analyses were performed based on patient-, surgical- and tumour-related factors. The prognostic value of the LNR on overall survival (OS) and on overall recurrence-free survival (ORFS) was assessed and a cut-off value was determined. RESULTS From 1998 to 2013, out of 456 patients, 357 with nonmetastatic disease were operated on for rectal cancer. Neoadjuvant radiochemotherapy was administered to 66.7% of the patients. The mean number of lymph nodes retrieved was 12.8 ± 8.78 per surgical specimen. A lower lymph node yield was obtained in patients who received neoadjuvant chemoradiotherapy (11.8 vs 14.2; P = 0.014). The 5-year ORFS was 71.8% and the 5-year OS was 80.1%. Multivariate analysis confirmed LNR, the quality of TME and age to be independent prognostic factors of OS. LNR, age and perineural infiltration were independently associated with ORFS. Low- and high-risk patients could be discriminated using an LNR cut-off value of 0.2. CONCLUSION LNR is an independent prognostic factor of OS and ORFS. In line with the principles of optimal surgical management, the quality of TME and lymph node yield are essential technical requirements.
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Affiliation(s)
- D Leonard
- Colorectal Surgery Unit, Cliniques universitaires Saint-Luc, Brussels, Belgium.,Cliniques des Pathologies Tumorales du Colon et de Rectum (CPTCR), Institut Roi Albert II, Cliniques universitaires Saint Luc, Brussels, Belgium
| | - C Remue
- Colorectal Surgery Unit, Cliniques universitaires Saint-Luc, Brussels, Belgium.,Cliniques des Pathologies Tumorales du Colon et de Rectum (CPTCR), Institut Roi Albert II, Cliniques universitaires Saint Luc, Brussels, Belgium
| | - N Abbes Orabi
- Colorectal Surgery Unit, Cliniques universitaires Saint-Luc, Brussels, Belgium.,Cliniques des Pathologies Tumorales du Colon et de Rectum (CPTCR), Institut Roi Albert II, Cliniques universitaires Saint Luc, Brussels, Belgium
| | - A van Maanen
- Statistical Support Unit, Institut Roi Albert II, Cliniques universitaires Saint-Luc, Brussels, Belgium
| | - E Danse
- Cliniques des Pathologies Tumorales du Colon et de Rectum (CPTCR), Institut Roi Albert II, Cliniques universitaires Saint Luc, Brussels, Belgium.,Department of Radiology, Cliniques universitaires Saint-Luc, Brussels, Belgium
| | - A Dragean
- Cliniques des Pathologies Tumorales du Colon et de Rectum (CPTCR), Institut Roi Albert II, Cliniques universitaires Saint Luc, Brussels, Belgium.,Department of Radiology, Cliniques universitaires Saint-Luc, Brussels, Belgium
| | - D Debetancourt
- Cliniques des Pathologies Tumorales du Colon et de Rectum (CPTCR), Institut Roi Albert II, Cliniques universitaires Saint Luc, Brussels, Belgium
| | - Y Humblet
- Cliniques des Pathologies Tumorales du Colon et de Rectum (CPTCR), Institut Roi Albert II, Cliniques universitaires Saint Luc, Brussels, Belgium.,Department of Medical Oncology, Cliniques universitaires Saint-Luc, Brussels, Belgium
| | - A Jouret-Mourin
- Cliniques des Pathologies Tumorales du Colon et de Rectum (CPTCR), Institut Roi Albert II, Cliniques universitaires Saint Luc, Brussels, Belgium.,Department of Pathology, Cliniques universitaires Saint-Luc, Brussels, Belgium
| | - F Maddalena
- Cliniques des Pathologies Tumorales du Colon et de Rectum (CPTCR), Institut Roi Albert II, Cliniques universitaires Saint Luc, Brussels, Belgium
| | - A Medina Benites
- Cliniques des Pathologies Tumorales du Colon et de Rectum (CPTCR), Institut Roi Albert II, Cliniques universitaires Saint Luc, Brussels, Belgium
| | - P Scalliet
- Cliniques des Pathologies Tumorales du Colon et de Rectum (CPTCR), Institut Roi Albert II, Cliniques universitaires Saint Luc, Brussels, Belgium.,Department of Radiation Oncology, Cliniques universitaires Saint-Luc, Brussels, Belgium
| | - C Sempoux
- Cliniques des Pathologies Tumorales du Colon et de Rectum (CPTCR), Institut Roi Albert II, Cliniques universitaires Saint Luc, Brussels, Belgium.,Department of Pathology, Cliniques universitaires Saint-Luc, Brussels, Belgium
| | - M Van den Eynde
- Cliniques des Pathologies Tumorales du Colon et de Rectum (CPTCR), Institut Roi Albert II, Cliniques universitaires Saint Luc, Brussels, Belgium.,Department of Medical Oncology, Cliniques universitaires Saint-Luc, Brussels, Belgium
| | - J C De Schoutheete
- Colorectal Surgery Unit, Cliniques universitaires Saint-Luc, Brussels, Belgium
| | - A Kartheuser
- Colorectal Surgery Unit, Cliniques universitaires Saint-Luc, Brussels, Belgium.,Cliniques des Pathologies Tumorales du Colon et de Rectum (CPTCR), Institut Roi Albert II, Cliniques universitaires Saint Luc, Brussels, Belgium
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14
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Fernández-Aceñero MJ, Granja M, Sastre J, García-Paredes B, Estrada L. Prognostic significance of tumor regression in lymph nodes after neoadjuvant therapy for rectal carcinoma. Virchows Arch 2016; 468:425-30. [PMID: 26754675 DOI: 10.1007/s00428-015-1901-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Revised: 12/08/2015] [Accepted: 12/29/2015] [Indexed: 12/13/2022]
Abstract
Neoadjuvant therapy (NAT) is mainly indicated for locally advanced rectal carcinoma. Many reports have shown that regression of the primary tumor is a prognostic factor. However, few reports to date have analyzed the potential prognostic significance of lymph node regression in rectal carcinoma. The aim of the present study is to describe the pattern of tumor regression in lymph nodes after NAT for rectal carcinoma and its potential prognostic significance. We have retrospectively reviewed 106 cases of rectal carcinoma treated at a single institution. We have retrieved data from the patients and reviewed the histopathological slides to evaluate tumor regression both of the primary tumor and of LN metastases. Prognosis has been defined both in terms of disease-free survival (DFS) and disease-specific survival (DSS). Of the patients, 16% showed complete response of the primary tumor, while 24% showed poor response, according to the CAP regression grading system. Absence of lymph node involvement after therapy was found in 80% of the patients (ypN0 cases), while 20% were ypN+. We reviewed 639 LN; 85 were involved by tumor, and 170 showed histological signs of tumor regression. The main pattern of tumor regression in lymph nodes was fibrosis (66.3%), followed by hystiocytosis (29.1%) and mucin pools (4.6%). We found histological signs of regression in 57% of ypN0 cases and 76% of ypN+ cases. We found a significant association between regression grade of the primary tumor and of lymph node metastases. For ypN0 patients with persistence of the primary tumor after NAT, the median DFS was significantly shorter in patients showing tumor regression in the LN. In a Cox multivariate survival model for DFS, this prognostic influence was independent of the regression grade of the primary tumor and also of the ypTNM stage. We found no significant association between any factor and DSS. The pattern of tumor regression in lymph nodes was not significantly associated with prognosis. Tumor regression in lymph nodes is an important prognostic factor in rectal carcinoma after NAT and should be specifically looked for and included in pathology reports.
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Affiliation(s)
- M J Fernández-Aceñero
- Surgical Pathology Department, Hospital Clínico San Carlos, Avda Profesor Lagos s/n 28040, Madrid, Spain.
| | - M Granja
- Department of Medical Oncology, Hospital Clínico San Carlos, Avda Profesor Lagos s/n 28040, Madrid, Spain
| | - J Sastre
- Department of Medical Oncology, Hospital Clínico San Carlos, Avda Profesor Lagos s/n 28040, Madrid, Spain
| | - B García-Paredes
- Department of Medical Oncology, Hospital Clínico San Carlos, Avda Profesor Lagos s/n 28040, Madrid, Spain
| | - L Estrada
- Surgical Pathology Department, Hospital Clínico San Carlos, Avda Profesor Lagos s/n 28040, Madrid, Spain
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15
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Increased number of negative lymph nodes is associated with improved cancer specific survival in pathological IIIB and IIIC rectal cancer treated with preoperative radiotherapy. Oncotarget 2015; 5:12459-71. [PMID: 25514596 PMCID: PMC4323013 DOI: 10.18632/oncotarget.2560] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Accepted: 09/29/2014] [Indexed: 02/07/2023] Open
Abstract
Preoperative radiation significantly decreases the number of retrieved lymph nodes (LNs) in rectal cancer, but little is known with respect to the prognostic significance of negative LN (NLN) counts under these circumstances. In this study, Surveillance, Epidemiology, and End Results Program (SEER)-registered ypIII stage rectal cancer patients, and patients from Fudan University Shanghai Cancer Center (FDSCC) were combined and analyzed. The results showed that the survival rate of patients with n (cutoff) or more NLNs increased gradually when n ranged from two to nine. After n reached 10 or greater, survival rates were approximately equivalent. Furthermore, the optimal cutoff value of 10 was validated as an independent prognostic factor in stage ypIIIB and ypIIIC patients by both univariate and multivariate analysis (P < 0.001); the number of NLNs could also stratify the prognosis of ypN(+) patients in more detail. Patients in the FDSCC set validated these findings and confirmed that NLN count was not decreased in the good tumor regression group relative to the poor tumor regression group. These results suggest that NLN count is an independent prognostic factor for ypIIIB and ypIIIC rectal cancer patients, and, together with the number of positive LNs, this will provide better prognostic information than the number of positive LNs alone.
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16
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Hall MD, Schultheiss TE, Smith DD, Fakih MG, Kim J, Wong JYC, Chen YJ. Impact of Total Lymph Node Count on Staging and Survival After Neoadjuvant Chemoradiation Therapy for Rectal Cancer. Ann Surg Oncol 2015; 22 Suppl 3:S580-7. [PMID: 25956577 DOI: 10.1245/s10434-015-4585-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Indexed: 01/04/2023]
Abstract
PURPOSE Current guidelines recommend that a minimum of 12 lymph nodes (LNs) be dissected to accurately stage rectal cancer patients. Neoadjuvant chemoradiation therapy (CRT) decreases the number of LNs retrieved at surgery. The purpose of this study was to assess the impact of the number of LNs dissected on overall survival (OS) for localized rectal cancer patients treated with neoadjuvant CRT. METHODS Treatment data were obtained on all patients treated for rectal cancer (2000-2013) in the National Oncology Data Alliance™, a proprietary database of merged tumor registries. Eligible patients were treated with neoadjuvant CRT followed by surgery and had complete data on number of positive LNs, number of LNs examined, and treatment dates (n = 4565). RESULTS Hazard ratios for OS decreased sequentially with increasing number of LNs examined until a maximum benefit was achieved with examination of eight LNs. On multivariate analysis, age, sex, race, marital status, grade, ypT stage, ypN stage, type of surgery, margin status, presence of pathologically confirmed metastasis at surgery, and number of LNs examined were significant predictors of OS. CONCLUSIONS Examination of eight or more LNs in rectal cancer patients treated with neoadjuvant CRT resulted in accurate staging and assignment into prognostic groups with an ensuing improvement in OS by stage. This study suggests that eight LNs is the threshold for an adequate lymph node dissection after neoadjuvant CRT.
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Affiliation(s)
- Matthew D Hall
- Department of Radiation Oncology, City of Hope National Medical Cancer, Duarte, CA, USA.
| | - Timothy E Schultheiss
- Department of Radiation Oncology, City of Hope National Medical Cancer, Duarte, CA, USA
| | - David D Smith
- Division of Biostatistics, City of Hope National Medical Cancer, Duarte, CA, USA
| | - Marwan G Fakih
- Department of Medical Oncology and Therapeutics Research, City of Hope National Medical Cancer, Duarte, CA, USA
| | - Joseph Kim
- Department of Surgery, City of Hope National Medical Cancer, Duarte, CA, USA
| | - Jeffrey Y C Wong
- Department of Radiation Oncology, City of Hope National Medical Cancer, Duarte, CA, USA
| | - Yi-Jen Chen
- Department of Radiation Oncology, City of Hope National Medical Cancer, Duarte, CA, USA
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17
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Muratore A, Mellano A, Marsanic P, De Simone M. Transanal total mesorectal excision (taTME) for cancer located in the lower rectum: short- and mid-term results. Eur J Surg Oncol 2015; 41:478-83. [PMID: 25633642 DOI: 10.1016/j.ejso.2015.01.009] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2014] [Revised: 12/22/2014] [Accepted: 01/13/2015] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Laparoscopic trans-abdominal total mesorectal excision is technically demanding. Transanal Total Mesorectal Excision (taTME) is a new technique which seems to provide technical advantages. This study describes the results of taTME in a consecutive series of patients with low rectal cancer. METHODS From January 2012 to December 2013, a consecutive series of 26 patients with low rectal cancer underwent laparoscopic taTME with coloanal anastomosis. cT4 or Type II-III rectal cancer (according to Rullier's classification) were contraindications to taTME. After anal sleeve mucosectomy, the rectal wall was transected at the ano-rectal junction. A single-access multichannel port was inserted in the anal canal. taTME was performed from down to up until the sacral promontory posteriorly and the Pouch of Douglas anteriorly were reached. A laparoscopic trans-abdominal approach was used to complete the left colon mobilization. RESULTS Sixteen patients (61.5%) were male. The mean distance of the rectal cancer from the anal verge was 4.4 cm (range 3-6). Nineteen patients (73.1%) received long-course neoadjuvant radiotherapy. At final pathology, resection margins were negative in all the patients: the mean distal and radial resection margins were 19 mm and 11.2 mm, respectively. TME was complete in 23 patients (88.5%) and nearly complete in three. Postoperative mortality was 3.8%. The overall morbidity rate was 26.9% (7 patients): two patients (7.7%) had an anastomotic leakage (Dindo I-d). After a mean follow up of 23 months, no patients have developed a local recurrence. CONCLUSIONS laparoscopic taTME allow wide resection margins and good quality TME.
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Affiliation(s)
- A Muratore
- Department of Surgical Oncology, Candiolo Cancer Institute - FPO, IRCCS, Candiolo, TO, Italy.
| | - A Mellano
- Department of Surgical Oncology, Candiolo Cancer Institute - FPO, IRCCS, Candiolo, TO, Italy
| | - P Marsanic
- Department of Surgical Oncology, Candiolo Cancer Institute - FPO, IRCCS, Candiolo, TO, Italy
| | - M De Simone
- Department of Surgical Oncology, Candiolo Cancer Institute - FPO, IRCCS, Candiolo, TO, Italy
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18
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Li Q, Zhuo C, Liang L, Zheng H, Li D, Cai S. Lymph node count after preoperative radiotherapy is an independently prognostic factor for pathologically lymph node-negative patients with rectal cancer. Medicine (Baltimore) 2015; 94:e395. [PMID: 25621683 PMCID: PMC4602649 DOI: 10.1097/md.0000000000000395] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Recent studies indicated that preoperative radiotherapy significantly reduces the lymph nodes (LNs) harvest from patients with rectal cancer. This may weaken the prognostic value of current standard of LNs retrieval (≥12 LNs). This study investigates the prognostic impact of the LN counts on pathologically LN-negative (ypN0) after preoperative radiotherapy for patients with rectal cancer.Surveillance, Epidemiology and End Results (SEER) registered nonmetastatic rectal cancer patients diagnosed between 1998 and 2005 were included in this study. Optimal cutoff value for number of LNs retrieved was determined by X-tile program. Log-rank tests were adopted to compare the rectal cause specific survival (RCSS) for ypN0 patients using separated cutoff value of LN counting from 2 to 20. Correlation between LN count and tumor regression was investigated in an additional 221 patients from Fudan University Shanghai Cancer Center (FUSCC).The results showed that there were fewer number of LNs examined in patients with preoperative radiotherapy than those without (8.9 vs 10.9, P < 0.001). X-tile program identified the difference in survival was most significant (maximum of χ log-rank values) for the number 4. And 5-year RCSS increased accordingly with the cutoff values ranging from 4 to 15, which were confirmed as optimal cutoff and validated as independent prognostic factors in multivariate regression analysis (χ = 50.65, P < 0.001). Patients in FUSCC set were found to have fewer LNs retrieval in group of good tumor regression than in that of poor one (P = 0.01).These results confirmed the reduced number of LN retrieval in patients with rectal cancer treated with preop-RT. LN count is still an independently prognostic factor for ypN0 rectal cancer.
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Affiliation(s)
- Qingguo Li
- From the Department of Colorectal Surgery (QL, CZ, LL, HZ, DL, SC), Fudan University Shanghai Cancer Center, and Department of Oncology, Shanghai Medical College, Fudan University, Shanghai; and Department of Surgical Oncology (CZ), Fujian Provincial Cancer Hospital, Teaching Hospital of Fujian Medical University, Fujian, China
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