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https://www.readbyqxmd.com/read/29768703/a-statistical-tool-for-risk-assessment-as-function-of-number-of-retrieved-lymph-nodes-from-rectal-cancer-patients
#1
Zhenyu Wu, Guoyou Qin, Naiqing Zhao, Huixun Jia, Xueying Zheng
PURPOSE: Although a minimum of 12 lymph nodes (LNs) has been recommended for colorectal cancer, there remains considerable debates for rectal cancer patients. Inadequacy of examined LNs would lead to under-staging, and inappropriate treatment as a consequence. We describe statistical tool that allows an estimate the probability of false-negative nodes. METHODS: A total of 26,778 adenocarcinoma rectum cancer patients with tumour stage (T stage) 1-3, diagnosed between 2004 and 2013, who did not receive neoadjuvant therapies and had at least one histologically assessed LN, were extracted from the Surveillance, Epidemiology and End Results (SEER) database...
May 16, 2018: Colorectal Disease: the Official Journal of the Association of Coloproctology of Great Britain and Ireland
https://www.readbyqxmd.com/read/29727804/marital-status-and-survival-in-patients-with-rectal-cancer-an-analysis-of-the-surveillance-epidemiology-and-end-results-seer-database
#2
Xiangyang Wang, Weilan Cao, Chenguo Zheng, Wanle Hu, Changbao Liu
BACKGROUND: Marital status has been validated as an independent prognostic factor for survival in several cancer types, but is controversial in rectal cancer (RC). The objective of this study was to investigate the impact of marital status on the survival outcomes of patients with RC. METHODS: We extracted data of 27,498 eligible patients diagnosed with RC between 2004 and 2009 from the Surveillance, Epidemiology and End Results (SEER) database. Patients were categorized into married, never married, divorced/separated and widowed groups...
May 1, 2018: Cancer Epidemiology
https://www.readbyqxmd.com/read/29726125/long-term-oncological-outcomes-of-local-excision-versus-radical-resection-for-early-colorectal-cancer-in-young-patients-without-preoperative-chemoradiotherapy-a-population-based-propensity-matching-study
#3
Bin Cao, Li Min, Shengtao Zhu, Haiyun Shi, Shutian Zhang
The incidence and mortality of colorectal carcinoma are rising in young adults. This population-based propensity matching study aimed to compare long-term oncological outcomes of local excision with radical resection for early localized colorectal cancer (CRC) in young patients without preoperative chemoradiotherapy. Patients under 45 years old with T1 colon or rectal adenocarcinoma who underwent local excision or radical resection were included from the Surveillance, Epidemiology, and End Results (SEER) database between 1998 and 2014...
May 3, 2018: Cancer Medicine
https://www.readbyqxmd.com/read/29721057/survival-contradiction-between-stage-iia-and-stage-iiia-rectal-cancer-a-retrospective-study
#4
Shaobo Mo, Weixing Dai, Wenqiang Xiang, Ben Huang, Yaqi Li, Yang Feng, Qingguo Li, Guoxiang Cai
Background: When compared with patients harboring stage IIB and stage IIC disease, those with stage IIIA colorectal cancer have a better prognosis. We aimed to compare the cause-specific survival (CSS) of the patients with stage IIA rectal cancer with that of the patients with stage IIIA rectal cancer. Methods: Data analyzed about patients with stage IIA and stage IIIA rectal cancer was from the US Surveillance, Epidemiology, and End Results (SEER) database. We then validated the results using data derived from Fudan University Shanghai Cancer Center (FUSCC)...
2018: Journal of Cancer
https://www.readbyqxmd.com/read/29705770/post-treatment-surveillance-testing-of-patients-with-colorectal-cancer-and-the-association-with-survival-protocol-for-a-retrospective-cohort-study-of-the-surveillance-epidemiology-and-end-results-seer-medicare-database
#5
Robert B Hines, Md Jibanul Haque Jiban, Kanak Choudhury, Victoria Loerzel, Adrian V Specogna, Steven P Troy, Shunpu Zhang
INTRODUCTION: Although the colorectal cancer (CRC) mortality rate has significantly improved over the past several decades, many patients will have a recurrence following curative treatment. Despite this high risk of recurrence, adherence to CRC surveillance testing guidelines is poor which increases cancer-related morbidity and potentially, mortality. Several randomised controlled trials (RCTs) with varying surveillance strategies have yielded conflicting evidence regarding the survival benefit associated with surveillance testing...
April 28, 2018: BMJ Open
https://www.readbyqxmd.com/read/29468556/what-is-the-minimum-number-of-examined-lymph-nodes-after-neoadjuvant-therapy-in-rectal-cancer
#6
Peng Gao, Yongxi Song, Yuchong Yang, Shan Zhao, Yu Sun, Jingxu Sun, Xiaowan Chen, Zhenning Wang
BACKGROUND: To date, no guidelines have standardized the number of examined lymph nodes (eLNs) after neoadjuvant treatment. This study investigated the minimum number of eLNs required for patients with rectal cancer (RC) who received neoadjuvant treatment. MATERIAL AND METHODS: This study was based on data from the Surveillance, Epidemiology, and End Results (SEER)-Medicare-linked database. We included 2173 patients with RC who received neoadjuvant therapy. Restricted cubic spline was used to analyze the association between eLNs and lymph node metastasis (LNM)...
February 21, 2018: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
https://www.readbyqxmd.com/read/29179513/the-impacts-of-surgery-of-the-primary-cancer-and-radiotherapy-on-the-survival-of-patients-with-metastatic-rectal-cancer
#7
Duo Tong, Fei Liu, Wenhua Li, Wen Zhang
The role of surgery of the primary cancer and radiation in metastatic colorectal cancer (mCRC) is still controversial currently, and evidence implied that colon cancer (CC) and rectal cancer (RC) should be treated with difference. Hence we focused on metastatic rectal cancer (mRC) solely to compare the cancer cause-specific survival (CSS) of patients receiving varied treatments of the primary cancer: no treatment, surgery only, radiation only, and surgery plus radiation, based on the records of the Surveillance, Epidemiology, and End Results (SEER) database...
October 24, 2017: Oncotarget
https://www.readbyqxmd.com/read/29168934/challenging-a-dogma-five-year-survival-does-not-equal-cure-in-all-colorectal-cancer-patients
#8
Omar Abdel-Rahman
BACKGROUND: The current study tried to evaluate the factors affecting 10- to 20- years' survival among long term survivors (>5 years) of colorectal cancer (CRC). METHODS: Surveillance, Epidemiology and End Results (SEER) database (1988-2008) was queried through SEER*Stat program.Univariate probability of overall and cancer-specific survival was determined and the difference between groups was examined. Multivariate analysis for factors affecting overall and cancer-specific survival was also conducted...
February 2018: Expert Review of Anticancer Therapy
https://www.readbyqxmd.com/read/28735257/prognostic-factors-of-overall-survival-and-cancer-specific-survival-in-patients-with-resected-early-stage-rectal-adenocarcinoma-a-seer-based-study
#9
Ko-Chao Lee, Kuan-Chih Chung, Hong-Hwa Chen, Chia-Cheng Liu, Chien-Chang Lu
The benefits of radiotherapy for colorectal cancer are well documented, but the impact of adjuvant radiotherapy on early-stage rectal adenocarcinoma remains unclear. This study aimed to identify predictors of overall survival (OS) and cancer-specific survival (CSS) in patients with stage II rectal adenocarcinoma treated with preoperative or postoperative radiation therapy. Patients with early-stage rectal adenocarcinoma in the postoperative state were identified using the Surveillance, Epidemiology, and End Results database...
December 2017: Journal of Investigative Medicine: the Official Publication of the American Federation for Clinical Research
https://www.readbyqxmd.com/read/28732371/the-impacts-of-surgery-of-the-primary-cancer-and-radiotherapy-on-the-survival-of-patients-with-metastatic-rectal-cancer
#10
Duo Tong, Fei Liu, Wenhua Li, Wen Zhang
The role of surgery of the primary cancer and radiation in metastatic colorectal cancer (mCRC) is still controversial currently, and evidence implied that colon cancer (CC) and rectal cancer (RC) should be treated with difference. Hence we focused on metastatic rectal cancer (mRC) solely to compare the cancer cause-specific survival (CSS) of patients receiving varied treatments of the primary cancer: no treatment, surgery only, radiation only, and surgery plus radiation, based on the records of the Surveillance, Epidemiology, and End Results (SEER) database...
July 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28615639/population-based-study-of-effectiveness-of-neoadjuvant-radiotherapy-on-survival-in-us-rectal-cancer-patients-according-to-age
#11
Leilei Wu, Shichao Pang, Qianlan Yao, Chen Jian, Ping Lin, Fangyoumin Feng, Hong Li, Yixue Li
Recent cancer researches pay more attention to younger patients due to the variable treatment response among different age groups. Here we investigated the effectiveness of neoadjuvant radiation on the survival of younger and older patients in stage II/III rectal cancer. Data was obtained from Surveillance, Epidemiology, and End Results (SEER) database (n = 12801). Propensity score matching was used to balance baseline covariates according to the status of neoadjuvant radiation. Our results showed that neoadjuvant radiation had better survival benefit (Log-rank P = 3...
June 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28534172/the-influence-of-local-therapy-on-the-survival-of-patients-with-metastatic-rectal-cancer-a-population-based-propensity-matched-study
#12
Chi-Hao Zhang, Yuan-Bo Pan, Qing-Wei Zhang, Ou-Min Shi, Lei Zheng, Liang Gui, Meng Luo
PURPOSE: This study was aimed to determine the effect of the local tumor therapy on patients' prognosis in the management of metastatic rectal cancer. METHODS: Patients diagnosed with metastatic rectal cancer from 2004 to 2013 were selected from the SEER (Surveillance, Epidemiology, and End Results) database. Overall survival and cancer-specific survival were compared between the local treatment group and the nonlocal treatment group using Kaplan-Meier methods. Uni- and multivariate analyses were further performed to confirm or deny the results...
May 22, 2017: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/28437692/stage-iv-colorectal-cancer-primary-site-and-patterns-of-distant-metastasis
#13
Jamaica R Robinson, Polly A Newcomb, Sheetal Hardikar, Stacey A Cohen, Amanda I Phipps
BACKGROUND: Although colorectal cancer (CRC) usually metastasizes to the liver and/or lungs, factors influencing the anatomic pattern of metastases remain poorly understood. METHODS: We assessed the relationship between primary CRC site and pattern of synchronous metastasis among 1202 individuals diagnosed with incident metastatic CRC between 2010 and 2014 and identified through the Seattle-Puget Sound Surveillance, Epidemiology, and End Results (SEER) registry...
June 2017: Cancer Epidemiology
https://www.readbyqxmd.com/read/28351352/negative-lymph-node-count-is-an-independent-prognostic-factor-for-patients-with-rectal-cancer-who-received-preoperative-radiotherapy
#14
Xinxing Li, Hao Lu, Kai Xu, Haolu Wang, Xiaowen Liang, Zhiqian Hu
BACKGROUND: Negative lymph node (NLN) count has been reported to provide more accurate prognostic information than the N stage alone in patients with rectal cancer (RC). Since preoperative radiotherapy (Pre-RT) can significantly affect the LN status, it is unclear whether NLN count still has prognostic value count on survival of patients with RC who received Pre-RT. METHODS: In this study, clinicopathological characteristics, number of positive LNs and survival time were collected from Surveillance, Epidemiology, and End Results Program (SEER)-registered RC patients...
March 28, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28345614/prognosis-and-value-of-preoperative-radiotherapy-in-locally-advanced-rectal-signet-ring-cell-carcinoma
#15
Chun-Run Ling, Rui Wang, Mo-Jin Wang, Jie Ping, Wen Zhuang
As well known, signet-ring cell carcinoma (SRCC) is a rare histological subtype of colorectal adenocarcinoma, which has been associated with poor prognosis and resistant to non-surgery therapy compared with common adenocarcinoma. In this study, we assessed the effect of preoperative radiotherapy (PRT) for locally advanced rectal SRCC in a large patient group from the Surveillance, Epidemiology, and End Results program (SEER, 1988-2011) database. SRCC was found in 0.9% (n = 622) rectal cancer (RC) patients in our study...
March 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28285840/secondary-malignancies-after-rectal-cancer-resection-with-and-without-radiation-therapy-a-propensity-adjusted-population-based-seer-analysis
#16
Rene Warschkow, Ulrich Güller, Thomas Cerny, Bruno Martin Schmied, Ludwig Plasswilm, Paul Martin Putora
BACKGROUND: The relationship between radiation therapy for rectal cancer and secondary malignancies is debated. The present study is the first population-based analysis using conventional multivariable analyses as well as propensity score matching to assess this relationship. METHODS: Overall, 77,484 patients after resection of localized or locally advanced rectal adenocarcinoma diagnosed between 1973 and 2012 were identified in the Surveillance, Epidemiology, and End Results (SEER) registry...
April 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28272410/long-term-effect-of-radiotherapy-in-rectal-cancer-patients-with-mucinous-tumor-a-large-population-based-study
#17
Xu Guan, Senhao Jia, Wei Chen, Zheng Jiang, Zheng Liu, Yinggang Chen, Guiyu Wang, Xishan Wang
Due to distinct biological behavior of mucinous adenocarcinoma (MAC) and signet ring cell cancer (SRC), the efficacy of radiotherapy on long-term outcome for rectal cancer (RC) patients with mucinous tumors is still unclear. Here, we identified 1808 RC patients with MAC/SRC from Surveillance, Epidemiology, and End-Results (SEER) database from 2004 to 2013. Patients were divided into two subgroups according to different therapeutic strategies, including surgery alone and surgery combined with radiotherapy. Kaplan-Meier methods and Cox regression models were used to access the influence of therapeutic strategy on long-term survival outcomes...
March 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28197206/survival-after-abdominoperineal-and-sphincter-preserving-resection-in-nonmetastatic-rectal-cancer-a-population-based-time-trend-and-propensity-score-matched-seer-analysis
#18
Rene Warschkow, Sabrina M Ebinger, Walter Brunner, Bruno M Schmied, Lukas Marti
Background. Abdominoperineal resection (APR) has been associated with impaired survival in nonmetastatic rectal cancer patients. It is unclear whether this adverse outcome is due to the surgical procedure itself or is a consequence of tumor-related characteristics. Study Design. Patients were identified from the Surveillance, Epidemiology, and End Results database. The impact of APR compared to coloanal anastomosis (CAA) on survival was assessed by Cox regression and propensity-score matching. Results. In 36,488 patients with rectal cancer resection, the APR rate declined from 31...
2017: Gastroenterology Research and Practice
https://www.readbyqxmd.com/read/28122523/adjuvant-radiotherapy-improves-cause-specific-survival-in-stage-ii-not-stage-iii-mucinous-carcinoma-of-the-rectum
#19
Qingguo Li, Yaqi Li, Weixing Dai, Sheng Wang, Ye Xu, Xinxiang Li, Sanjun Cai
BACKGROUND: The effect of adjuvant radiotherapy on the survival outcomes of patients with mucinous rectal cancer remains unclear. This study evaluated the 5-year cause specific survival (CSS) of patients with mucinous rectal cancer after surgery to determine whether adjuvant radiotherapy conferred a survival benefit. METHODS: An analysis of the Surveillance, Epidemiology, and End Results (SEER)-registered database was conducted of patients presenting with mucinous rectal cancer between 2004 and 2011...
January 26, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28096199/trends-in-radiation-therapy-among-cancer-survivors-in-the-united-states-2000-2030
#20
Alex K Bryant, Matthew P Banegas, Maria Elena Martinez, Loren K Mell, James D Murphy
Background: Although the number of cancer survivors has increased substantially over the past several decades, the composition of survivors treated with radiotherapy is not well defined. Radiotherapy carries unique long-term toxicity risks for cancer survivors. This study describes the current estimates and future projections of the epidemiology of 5-year cancer survivors who receive radiation therapy. Methods: We used cancer incidence and survival data from the Surveillance, Epidemiology, and End-Results (SEER) database linked to U...
June 2017: Cancer Epidemiology, Biomarkers & Prevention
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