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Liao SW, Zhan JQ, Liu CT, Yu HT, Wen MJ. Survival Benefit of Primary Tumor Resection Combined With Chemotherapy in Patients With Unresectable Colorectal Mucinous Adenocarcinoma With Liver Metastasis. Am J Clin Oncol 2024; 47:30-39. [PMID: 38148710 PMCID: PMC10743404 DOI: 10.1097/coc.0000000000001055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2023]
Abstract
OBJECTIVE To evaluate the survival benefit of combining primary tumor resection (PTR) and chemotherapy in patients with unresectable colorectal mucinous adenocarcinoma with liver metastasis (UCR-MAC-LM). METHODS We obtained data from the surveillance, epidemiology, and end results database for patients with UCR-MAC-LM from 2010 to 2017. Clinicopathological characteristics were analyzed using the χ2 test. Propensity score matching was performed to balance baseline characteristics. Kaplan-Meier analysis and log-rank tests were used to estimate and compare survival outcomes. Univariate and multivariate Cox regression analyses were conducted to identify the prognostic factors. RESULTS A total of 10,178 patients with unresectable colorectal adenocarcinoma with liver metastasis were included, of whom 6.01% (n=612) had UCR-MAC-LM. The UCR-MAC-LM group had a higher proportion of female patients, a greater number of elderly patients, an increased incidence of right colon localization, larger tumor size, and higher T and N staging than the unresectable colorectal non-mucinous adenocarcinoma with liver metastasis group (P<0.05). Multivariate analysis identified several independent prognostic factors (P<0.05). Patients with unresectable colorectal adenocarcinoma with liver metastasis who underwent PTR+C had superior survival rates compared with those who received PTR/C alone or no treatment (cancer-specific survival, P<0.05; overall survival, P<0.05). Subgroup analysis revealed that 17 of 22 groups of patients with UCR-MAC-LM who received PTR+C had significantly prolonged long-term survival compared with those who received PTR/C alone. CONCLUSIONS This surveillance, epidemiology, and end results-based study indicates that PTR+C may offer a survival advantage for a specific subgroup of patients with UCR-MAC-LM compared with PTR/C alone. Nonetheless, additional clinical trials are necessary to validate these findings.
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Affiliation(s)
- Shu-wen Liao
- Department of General Surgery, Guangzhou First People’s Hospital, the Second Affiliated Hospital of South China University of Technology
- Departments of General Surgery
| | - Jie-qun Zhan
- Physical Examination Center, Guangzhou Nansha Central Hospital Affiliated to Guangzhou First People’s Hospital, Guangzhou, Guangdong, China
| | - Chu-tian Liu
- Department of General Surgery, Guangzhou First People’s Hospital, the Second Affiliated Hospital of South China University of Technology
- Departments of General Surgery
| | - Hai-tao Yu
- Department of General Surgery, Guangzhou First People’s Hospital, the Second Affiliated Hospital of South China University of Technology
- Departments of General Surgery
| | - Min-jie Wen
- Department of General Surgery, Guangzhou First People’s Hospital, the Second Affiliated Hospital of South China University of Technology
- Departments of General Surgery
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Zhao J, Zhu J, Huang C, Yuan R, Zhu Z. Impact of primary tumor resection on the survival of patients with unresectable colon cancer liver metastasis at different colonic subsites: a propensity score matching analysis. Acta Chir Belg 2023; 123:132-147. [PMID: 34278951 DOI: 10.1080/00015458.2021.1956799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
OBJECTIVE To investigate the effect of primary tumor resection (PTR) on the prognosis of patients with unresectable colon cancer liver metastasis (UCCLM) at seven colonic subsites using the Surveillance, Epidemiology, and End Results (SEER) database. METHODS Propensity score matching (PSM) was performed to balance selection bias using all available variables that could be of potential relevance. After matching, the groups were redefined in a 1:1 ratio using the nearest method. Cancer-specific survival (CSS) was compared among the patients of PTR and non-PTR groups. Cox regression models were used to identify the prognostic factors for CSS. RESULTS CSS was significantly different between all groups. Cox regression analysis showed that PTR was an independent prognostic factor for all groups. After PSM, PTR significantly prolonged CSS for all groups. Subgroup analysis showed that PTR did not improve the prognosis of N2 stage patients in the cecum, ascending colon, and descending colon groups; T1 + T2 stage patients in the hepatic flexure group; and patients with a tumor size ≤5 cm in the splenic flexure group. Segmental colectomy could prolong CSS of patients in the cecum, ascending colon, transverse colon, splenic flexure, and sigmoid colon groups, while extended colectomy could prolong CSS of patients in the hepatic flexure and descending colon groups. CONCLUSION At different colonic subsites, UCCLM patients had different CSS. PTR could improve their prognosis, however, N stage, T stage, and tumor size are important reference indicators. In addition to patients in the hepatic flexure and descending colon groups, we suggested that patients in other groups should choose segmental colectomy.
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Affiliation(s)
- Jiefeng Zhao
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Jinfeng Zhu
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Chao Huang
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Rongfa Yuan
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Zhengming Zhu
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, China
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Zhang L, Li H, Wang T, Wang R, Cheng L, Wang G. Real-World Study: A Powerful Tool for Malignant Tumor Research in General Surgery. Cancers (Basel) 2022; 14:5408. [PMID: 36358825 PMCID: PMC9656785 DOI: 10.3390/cancers14215408] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 10/21/2022] [Accepted: 10/31/2022] [Indexed: 03/01/2024] Open
Abstract
Real-world study (RWS) is a method to draw conclusions by collecting and analyzing real-world data under a real clinical background. Compared with traditional randomized controlled trials (RCTs), RWSs are favored by clinicians because of their low cost and good extrapolation. In recent years, RWS has made remarkable achievements in the field of general surgery, especially in the drug treatment of advanced malignant tumors. Therefore, to further understand the main contents of the existing RWS and the application prospect of RWS in the future, this paper systematically reviews the clinical application of RWS in malignant tumors in general surgery in the past three years.
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Affiliation(s)
- Liang Zhang
- Department of Pancreatic and Biliary Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin 150000, China
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Harbin 150000, China
| | - He Li
- Department of Centric Operating Room, The First Affiliated Hospital of Harbin Medical University, Harbin 150000, China
| | - TianFu Wang
- Department of Pancreatic and Biliary Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin 150000, China
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Harbin 150000, China
| | - RuiXin Wang
- Department of Pancreatic and Biliary Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin 150000, China
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Harbin 150000, China
| | - Long Cheng
- Department of Pancreatic and Biliary Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin 150000, China
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Harbin 150000, China
| | - Gang Wang
- Department of Pancreatic and Biliary Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin 150000, China
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Harbin 150000, China
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Sertesen E, Yekedüz E, Köksoy EB, Ürün Y, Erkek AB, Demirci S, Ünal AE, Utkan G. The effect of primary tumour resection on patients with synchronous metastatic colorectal cancer treated with cetuximab-containing regimens. ANZ J Surg 2022; 93:945-950. [PMID: 36259228 DOI: 10.1111/ans.18117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 09/24/2022] [Accepted: 10/02/2022] [Indexed: 11/29/2022]
Abstract
BACKGROUND This study aims to assess the effect of primary tumour resection (PTR) on patients with metastatic colorectal cancer (mCRC) treated with cetuximab. METHODS This retrospective cohort study was conducted in a tertiary cancer center in Turkey. Patients with mCRC between January 2009 and December 2020 were extracted from the electronic hospital management system. Patients with RAS wild-type synchronous metastatic left-sided colon or rectum cancer who had cetuximab-containing treatment protocol were included in the study. The primary outcomes were overall survival (OS) and progression-free survival (PFS). The secondary outcome was response rates. RESULTS A total of 111 patients with mCRC were included in this study. PTR was performed in 57.7% of all patients. Fifty-nine (53.2%) and 52 (46.8%) patients had rectal and left colon tumours, respectively. The combination treatment with cetuximab was FOLFIRI in 62.2% and FOLFOX in 29.7% of all patients. In subgroup analysis, the median PFS was 7.9 and 9 months in PTR (+) and PTR (-) patients, respectively. The difference between the groups was not statistically significant (P = 0.3). The median OS was 33 months in all patients. In subgroup analysis, the median OS was 39 and 27.9 months in PTR (+) and PTR (-) patients, respectively. The difference between the groups was statistically significant (P = 0.002). After adjusting for confounding factors, PTR and ECOG performance score were the independent prognostic factors for OS. CONCLUSION PTR improved the OS in patients with RAS wild-type synchronous left-sided colon or rectum cancer treated with cetuximab-containing chemotherapy regimens.
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Affiliation(s)
- Elif Sertesen
- Faculty of Medicine Department of Internal Medicine, Ankara University, Ankara, Turkey
| | - Emre Yekedüz
- Faculty of Medicine Department of Medical Oncology, Ankara University, Ankara, Turkey
| | - Elif Berna Köksoy
- Faculty of Medicine Department of Medical Oncology, Ankara University, Ankara, Turkey
| | - Yüksel Ürün
- Faculty of Medicine Department of Medical Oncology, Ankara University, Ankara, Turkey
| | - Ayhan Bülent Erkek
- Faculty of Medicine Department of General Surgery, Ankara University, Ankara, Turkey
| | - Salim Demirci
- Faculty of Medicine Department of Surgical Oncology, Ankara University, Ankara, Turkey
| | - Ali Ekrem Ünal
- Faculty of Medicine Department of Surgical Oncology, Ankara University, Ankara, Turkey
| | - Güngör Utkan
- Faculty of Medicine Department of Medical Oncology, Ankara University, Ankara, Turkey
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Kuai L, Zhang Y, Luo Y, Li W, Li XD, Zhang HP, Liu TY, Yin SY, Li B. Prognostic Nomogram for Liver Metastatic Colon Cancer Based on Histological Type, Tumor Differentiation, and Tumor Deposit: A TRIPOD Compliant Large-Scale Survival Study. Front Oncol 2021; 11:604882. [PMID: 34712601 PMCID: PMC8546254 DOI: 10.3389/fonc.2021.604882] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 09/20/2021] [Indexed: 12/11/2022] Open
Abstract
Objective A proportional hazard model was applied to develop a large-scale prognostic model and nomogram incorporating clinicopathological characteristics, histological type, tumor differentiation grade, and tumor deposit count to provide clinicians and patients diagnosed with colon cancer liver metastases (CLM) a more comprehensive and practical outcome measure. Methods Using the Transparent Reporting of multivariable prediction models for individual Prognosis or Diagnosis (TRIPOD) guidelines, this study identified 14,697 patients diagnosed with CLM from 1975 to 2017 in the Surveillance, Epidemiology, and End Results (SEER) 21 registry database. Patients were divided into a modeling group (n=9800), an internal validation group (n=4897) using computerized randomization. An independent external validation cohort (n=60) was obtained. Univariable and multivariate Cox analyses were performed to identify prognostic predictors for overall survival (OS). Subsequently, the nomogram was constructed, and the verification was undertaken by receiver operating curves (AUC) and calibration curves. Results Histological type, tumor differentiation grade, and tumor deposit count were independent prognostic predictors for CLM. The nomogram consisted of age, sex, primary site, T category, N category, metastasis of bone, brain or lung, surgery, and chemotherapy. The model achieved excellent prediction power on both internal (mean AUC=0.811) and external validation (mean AUC=0.727), respectively, which were significantly higher than the American Joint Committee on Cancer (AJCC) TNM system. Conclusion This study proposes a prognostic nomogram for predicting 1- and 2-year survival based on histopathological and population-based data of CLM patients developed using TRIPOD guidelines. Compared with the TNM stage, our nomogram has better consistency and calibration for predicting the OS of CLM patients.
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Affiliation(s)
- Le Kuai
- Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Institute of Dermatology, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
| | - Ying Zhang
- Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Institute of Dermatology, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
| | - Ying Luo
- Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Institute of Dermatology, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
| | - Wei Li
- Center for Translational Medicine, Huaihe Hospital of Henan University, Kaifeng, China
| | - Xiao-Dong Li
- Department of Urology Surgery, Huaihe Hospital of Henan University, Kaifeng, China.,Institute of Evidence-Based Medicine and Knowledge Translation, Henan University, Kaifeng, China
| | - Hui-Ping Zhang
- Research and Development Center, Shanghai Applied Protein Technology Co., Ltd., Shanghai, China
| | - Tai-Yi Liu
- Research and Development Center, Shanghai Applied Protein Technology Co., Ltd., Shanghai, China
| | - Shuang-Yi Yin
- Center for Translational Medicine, Huaihe Hospital of Henan University, Kaifeng, China
| | - Bin Li
- Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Institute of Dermatology, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China.,Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, China
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Arhin ND, Shen C, Bailey CE, Matsuoka LK, Hawkins AT, Holowatyj AN, Ciombor KK, Hopkins MB, Geiger TM, Kam AE, Roth MT, Lebeck Lee CM, Lapelusa M, Dasari A, Eng C. Surgical resection and survival outcomes in metastatic young adult colorectal cancer patients. Cancer Med 2021; 10:4269-4281. [PMID: 34132476 PMCID: PMC8267130 DOI: 10.1002/cam4.3940] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 04/09/2021] [Accepted: 04/12/2021] [Indexed: 12/17/2022] Open
Abstract
Background The incidence of colorectal cancer in adults younger than age 50 has increased with rates expected to continue to increase over the next decade. The objective of this study is to examine the survival benefit of surgical resection (primary and/or metastatic) versus palliative therapy in this patient population. Methods We identified 6708 young adults aged 18–45 years diagnosed with metastatic colorectal cancer (mCRC) from 2004 to 2015 from the SEER database. Overall survival (OS) was analyzed using Kaplan–Meier estimation, log rank test, and multivariate Cox proportional hazards model. Results Sixty‐three percent of patients in our study underwent primary tumor resection (PTR), with 40% undergoing PTR alone and 23% undergoing both resection of primary disease and metastasectomy. The median OS for patients who underwent both PTR and metastasectomy was 36 months, compared to 13 months for those who did not receive any surgical intervention. The multivariate analysis showed significant OS benefit of receiving both PTR and metastasectomy (HR 0.34, 95% CI: 0.31–0.37, p < 0.001) compared to palliative therapy. Undergoing PTR only and metastasectomy only were also associated with improved OS (HR 0.46, 95% CI: 0.43–0.49, p < 0.001 and HR 0.64, 95% CI: 0.55–0.76, p < 0.001, respectively). Conclusion This is the largest observational study to evaluate survival outcomes in young‐onset mCRC patients and the role of surgical intervention of the primary and/or metastatic site. Our study provides evidence of statistically significant increase in OS for young mCRC patients who undergo surgical intervention of the primary and/or metastatic site.
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Affiliation(s)
- Nina D Arhin
- Division of Hematology and Oncology, Department of Internal Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Chan Shen
- Department of Surgery, Department of Public Health Sciences, Penn State College of Medicine, Hershey, PA, USA
| | - Christina E Bailey
- Division of Surgical Oncology and Endocrine Surgery, Department of Surgery, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Lea K Matsuoka
- Division of Hepatobiliary Surgery and Liver Transplantation, Department of Surgery, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Alexander T Hawkins
- Section of Colon & Rectal Surgery, Department of Surgery, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Andreana N Holowatyj
- Department of Medicine, Vanderbilt University Medical Center/Vanderbilt-Ingram Cancer Center, Nashville, TN, USA
| | - Kristen K Ciombor
- Division of Hematology and Oncology, Department of Internal Medicine, Vanderbilt University Medical Center/Vanderbilt-Ingram Cancer Center, Nashville, TN, USA
| | - Michael B Hopkins
- Division of General Surgery, Colon and Rectal Surgery, Department of Surgery, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Timothy M Geiger
- Division of General Surgery, Colon and Rectal Surgery, Department of Surgery, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Audrey E Kam
- Division of Hematology, Oncology and Cell Therapy, Department of Internal Medicine, Rush University Medical Center, Chicago, IL, USA
| | - Marc T Roth
- Division of Hematology and Oncology, Department of Internal Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | | | - Michael Lapelusa
- Department of Internal Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Arvind Dasari
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Cathy Eng
- Division of Hematology and Oncology, Department of Internal Medicine, Vanderbilt University Medical Center/Vanderbilt-Ingram Cancer Center, Nashville, TN, USA
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Zhao J, Zhu J, Sun R, Huang C, Yuan R, Zhu Z. Primary tumor resection improves prognosis of unresectable carcinomas of the transverse colon including flexures with liver metastasis: a preliminary population-based analysis. BMC Cancer 2021; 21:503. [PMID: 33957871 PMCID: PMC8101189 DOI: 10.1186/s12885-021-08157-0] [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: 12/05/2020] [Accepted: 04/05/2021] [Indexed: 11/19/2022] Open
Abstract
Purpose Studies on unresectable colorectal cancer liver metastasis(CRLM) rarely analyze the prognosis of the patients from the point of colonic subsites. We aimed to evaluate the effect of primary tumor resection (PTR) and different scope of colectomy on the prognosis of patients with unresectable transverse colon cancer liver metastasis (UTCLM), hepatic flexure cancer liver metastasis (UHFLM), and splenic flexure cancer liver metastasis (USFLM). Patients and methods The patients were identified from the Surveillance, Epidemiology, and End Results (SEER) database from 2010 to 2015. Cox proportional hazards regression models were used to identify prognostic factors of overall survival (OS) and cause-specific survival (CSS). Kaplan-Meier analyses and log-rank tests were conducted to assess the effectiveness of PTR on survival. Results In total, this study included a cohort of 1960 patients: 556 cases of UHFLM, 1008 cases of UTCLM, and 396 cases of USFLM. The median survival time of whole patients was 11.0 months, ranging from 7.0 months for UHFLM patients to 15.0 months for USFLM patients. USFLM patients had the best OS and CSS, followed by UTCLM patients. UHFLM patients had the worst OS and CSS (All P < 0.001). PTR could improve the OS and CSS of UTCLM, UHFLM, and USFLM (All P < 0.001). Subgroups analysis revealed that USFLM patients with tumor size≤5 cm and negative CEA had not demonstrated an improved OS and CSS after PTR. Multivariate analysis showed that PTR and perioperative chemotherapy were common independent prognostic factors for UHFLM, UTCLM, and USFLM patients. There was no difference between segmental colon resection and larger colon resection on CSS of UHFLM, UTCLM, and USFLM patients. Conclusions We confirmed the different survival of patients with UTCLM, UHFLM, and USFLM, and for the first time, we proved that PTR could provide survival benefits for patients with unresectable CRLM from the perspective of colonic subsites of transverse colon, hepatic flexure, and splenic flexure. Besides, PTR may not improve the prognosis of USFLM patients with CEA- negative or tumor size≤5 cm. For oncologic outcomes, we concluded that segmental colon resection seemed an effective surgical procedure for UTCLM, UHFLM, and USFLM.
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Affiliation(s)
- Jiefeng Zhao
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Nanchang University, No. 1, Minde Road, Nanchang, Jiangxi, 330006, People's Republic of China
| | - Jinfeng Zhu
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Nanchang University, No. 1, Minde Road, Nanchang, Jiangxi, 330006, People's Republic of China
| | - Rui Sun
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital of Nanchang University, No. 1, Minde Road, Nanchang, Jiangxi, 330006, People's Republic of China
| | - Chao Huang
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Nanchang University, No. 1, Minde Road, Nanchang, Jiangxi, 330006, People's Republic of China
| | - Rongfa Yuan
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital of Nanchang University, No. 1, Minde Road, Nanchang, Jiangxi, 330006, People's Republic of China.
| | - Zhengming Zhu
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Nanchang University, No. 1, Minde Road, Nanchang, Jiangxi, 330006, People's Republic of China.
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Doah KY, Shin US, Jeon BH, Cho SS, Moon SM. The Impact of Primary Tumor Resection on Survival in Asymptomatic Colorectal Cancer Patients With Unresectable Metastases. Ann Coloproctol 2021; 37:94-100. [PMID: 33979907 PMCID: PMC8134925 DOI: 10.3393/ac.2020.09.15.1] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 09/15/2020] [Indexed: 12/16/2022] Open
Abstract
Purpose This study was conducted to evaluate the effectiveness of primary tumor resection (PTR) in asymptomatic colorectal cancer (CRC) patients with unresectable metastases using the inverse probability of treatment weighting (IPTW) method to minimize selection bias. Methods We selected 146 patients diagnosed with stage IV CRC with unresectable metastasis between 2001 and 2018 from our institutional database. In a multivariate logistic regression model using the patients’ baseline covariates associated with PTR, we applied the IPTW method based on a propensity score and performed a weighted Cox proportional regression analysis to estimate survival according to PTR. Results Upfront PTR was performed in 98 patients, and no significant differences in baseline factors were detected. The upweighted median survival of the PTR group was 18 months and that of the non-PTR group was 15 months (P = 0.15). After applying the IPTW, the PTR was still insignificant in the univariate Cox regression (hazard ratio [HR], 0.26; 95% confidence interval [CI], 0.5–1.21). However, in the multivariate weighted Cox regression with adjustment for other covariates, the PTR showed a significantly decreased risk of cancer-related death (HR, 0.61; 95% CI, 0.40–0.94). Conclusion In this study, we showed that asymptomatic CRC patients with unresectable metastases could gain a survival benefit from upfront PTR by analysis with the IPTW method. However, randomized controlled trials are mandatory.
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Affiliation(s)
- Ki Yoon Doah
- Department of Surgery, Korea Institute of Radiological & Medical Sciences, Korea Cancer Center Hospital, Seoul, Korea
| | - Ui Sup Shin
- Department of Surgery, Korea Institute of Radiological & Medical Sciences, Korea Cancer Center Hospital, Seoul, Korea
| | - Byong Ho Jeon
- Department of Surgery, Korea Institute of Radiological & Medical Sciences, Korea Cancer Center Hospital, Seoul, Korea
| | - Sang Sik Cho
- Department of Surgery, Korea Institute of Radiological & Medical Sciences, Korea Cancer Center Hospital, Seoul, Korea
| | - Sun Mi Moon
- Department of Surgery, Korea Institute of Radiological & Medical Sciences, Korea Cancer Center Hospital, Seoul, Korea
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Ihn MH. Primary Tumor Resection in Asymptomatic Colorectal Cancer Patients With Unresectable Metastases: Can It Improve Survival? Ann Coloproctol 2021; 37:71-72. [PMID: 33979905 PMCID: PMC8134923 DOI: 10.3393/ac.2021.04.14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/29/2022] Open
Affiliation(s)
- Myong Hoon Ihn
- Department of Surgery, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine, Seoul, Korea
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