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World Journal of Gastrointestinal Oncology

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https://www.readbyqxmd.com/read/28451066/helicobacter-pylori-recurrence-after-eradication-in-latin-america-implications-for-gastric-cancer-prevention
#1
Juan E Corral, Robertino Mera, Corey W Dye, Douglas R Morgan
AIM: To estimate Helicobacter pylori (H. pylori) recurrence rate in Latin America, a region with a significant H. pylori prevalence and gastric cancer burden. METHODS: PubMed, LILACS, SciELO, Cochrane databases and abstracts from relevant meetings were reviewed. Information collected included: Participants' characteristics, recruitment strategy, diagnostic modality, treatment arms, follow-up and recurrence rates. Recurrence was calculated using 100-patients-year rates, and data were pooled using a random effects model...
April 15, 2017: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28451065/incidence-of-venous-thromboembolism-and-the-role-of-d-dimer-as-predictive-marker-in-patients-with-advanced-gastric-cancer-receiving-chemotherapy-a-prospective-study
#2
Kwonoh Park, Baek-Yeol Ryoo, Min-Hee Ryu, Sook Ryun Park, Myoung Joo Kang, Jeong Hye Kim, Seungbong Han, Yoon-Koo Kang
AIM: To investigated the incidence and risk factors of venous thromboembolism (VTE) in patients with advanced gastric cancer (AGC) receiving chemotherapy. METHODS: All consecutive chemotherapy-naïve patients with AGC who would receive palliative chemotherapy between November 2009 and April 2012 in our hospital were recruited. Their pretreatment clinical and laboratory variables, including D-dimer, were recorded. The frequency of VTE development and survival rates during each chemotherapy cycle and regularly thereafter were assessed...
April 15, 2017: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28451064/macroscopic-appearance-of-type-iv-and-giant-type-iii-is-a-high-risk-for-a-poor-prognosis-in-pathological-stage-ii-iii-advanced-gastric-cancer-with-postoperative-adjuvant-chemotherapy
#3
Keishi Yamashita, Akira Ema, Kei Hosoda, Hiroaki Mieno, Hiromitsu Moriya, Natsuya Katada, Masahiko Watanabe
AIM: To evaluate whether a high risk macroscopic appearance (Type IV and giant Type III) is associated with a dismal prognosis after curative surgery, because its prognostic relevance remains elusive in pathological stage II/III (pStage II/III) gastric cancer. METHODS: One hundred and seventy-two advanced gastric cancer (defined as pT2 or beyond) patients with pStage II/III who underwent curative surgery plus adjuvant S1 chemotherapy were evaluated, and the prognostic relevance of a high-risk macroscopic appearance was examined...
April 15, 2017: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28451063/bayesian-adjustment-of-gastric-cancer-mortality-rate-in-the-presence-of-misclassification
#4
Nastaran Hajizadeh, Mohamad Amin Pourhoseingholi, Ahmad Reza Baghestani, Alireza Abadi, Mohammad Reza Zali
AIM: To correct for misclassification error in registering causes of death in Iran death registry using Bayesian method. METHODS: National death statistic from 2006 to 2010 for gastric cancer which reported annually by the Ministry of Health and Medical Education included in this study. To correct the rate of gastric cancer mortality with reassigning the deaths due to gastric cancer that registered as cancer without detail, a Bayesian method was implemented with Poisson count regression and beta prior for misclassified parameter, assuming 20% misclassification in registering causes of death in Iran...
April 15, 2017: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28451062/effect-of-clostridium-perfringens-enterotoxin-on-gastric-cancer-cells-sgc7901-which-highly-expressed-claudin-4-protein
#5
Zheng-Yun Liang, Xing Kang, Hong Chen, Meng Wang, Wen-Xian Guan
AIM: To investigate the effects of Clostridium perfringens enterotoxin (CPE) on gastric cancer cells which highly expressed claudin-4 (CL4) protein. METHODS: In this study, we detected expression of CL4 protein in different gastric cancer cell lines. Then, we investigated the effects of CPE on SGC7901 cells which highly expressed CL4 protein and the effects of CPE on subcutaneous tumor in nude mice models. RESULTS: CL4 are highly expressed in SGC7901 cells...
April 15, 2017: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28451061/abnormal-dna-methylation-as-a-cell-free-circulating-dna-biomarker-for-colorectal-cancer-detection-a-review-of-literature
#6
REVIEW
Michail Galanopoulos, Nikolaos Tsoukalas, Ioannis S Papanikolaou, Maria Tolia, Maria Gazouli, Gerassimos J Mantzaris
Colorectal cancer (CRC) is one of the most prevalent malignancies in the world. CRC-associated morbidity and mortality is continuously increasing, in part due to a lack of early detection. The existing screening tools such as colonoscopy, are invasive and yet high cost, affecting the willingness of patients to participate in screening programs. In recent years, evidence is accumulating that the interaction of aberrant genetic and epigenetic modifications is the cornerstone for the CRC development and progression by alternating the function of tumor suppressor genes, DNA repair genes and oncogenes of colonic cells...
April 15, 2017: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28344749/heavily-calcified-gastrointestinal-stromal-tumors-pathophysiology-and-implications-of-a-rare-clinicopathologic-entity
#7
Massimiliano Salati, Giulia Orsi, Luca Reggiani Bonetti, Fabrizio Di Benedetto, Giuseppe Longo, Stefano Cascinu
Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal neoplasms of the gastrointestinal tract, and are characterized by a broad spectrum of clinical, histological and molecular features at presentation. Although focal and scattered calcifications are not uncommon within the primary tumor mass, heavy calcification within a GIST is rarely described in the literature and the clinical-biological meaning of this feature remains unclear. Cases with such an atypical presentation are challenging and may be associated with diagnostic pitfalls...
March 15, 2017: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28344748/lung-cancer-metastasis-to-the-gastrointestinal-system-an-enigmatic-occurrence
#8
Kanthi Rekha Badipatla, Niharika Yadavalli, Trupti Vakde, Masooma Niazi, Harish K Patel
Adenocarcinoma of the lung infrequently metastasizes to the gastrointestinal tract. We report a rare case of a 65-year-old male with no respiratory symptoms diagnosed with adenocarcinoma of the lung by histopathological examination of metastatic sites which included an ulcer in the gastric body and a mass in the rectum. Metastatic disease also involved the liver as well. Patient was treated with systemic chemotherapy but unfortunately expired five months after the diagnosis was made.
March 15, 2017: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28344747/gastric-peritoneal-carcinomatosis-a-retrospective-review
#9
Hwee Leong Tan, Claramae Shulyn Chia, Grace Hwei Ching Tan, Su Pin Choo, David Wai-Meng Tai, Clarinda Wei Ling Chua, Matthew Chau Hsien Ng, Khee Chee Soo, Melissa Ching Ching Teo
AIM: To characterize patients with gastric peritoneal carcinomatosis (PC) and their typical clinical and treatment course with palliative systemic chemotherapy as the current standard of care. METHODS: We performed a retrospective electronic chart review of all patients with gastric adenocarcinoma with PC diagnosed at initial metastatic presentation between January 2010 and December 2014 in a single tertiary referral centre. RESULTS: We studied a total of 271 patients with a median age of 63...
March 15, 2017: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28344746/cpg-island-methylator-phenotype-in-adenocarcinomas-from-the-digestive-tract-methods-conclusions-and-controversies
#10
EDITORIAL
Francisco Sánchez-Vega, Valer Gotea, Yun-Ching Chen, Laura Elnitski
Over the last two decades, cancer-related alterations in DNA methylation that regulate transcription have been reported for a variety of tumors of the gastrointestinal tract. Due to its relevance for translational research, great emphasis has been placed on the analysis and molecular characterization of the CpG island methylator phenotype (CIMP), defined as widespread hypermethylation of CpG islands in clinically distinct subsets of cancer patients. Here, we present an overview of previous work in this field and also explore some open questions using cross-platform data for esophageal, gastric, and colorectal adenocarcinomas from The Cancer Genome Atlas...
March 15, 2017: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28344745/can-molecular-biomarkers-replace-a-clinical-risk-score-for-resectable-colorectal-liver-metastasis
#11
EDITORIAL
Torhild Veen, Kjetil Søreide
In resectable colorectal liver metastasis (CRLM) the role and use of molecular biomarkers is still controversial. Several biomarkers have been linked to clinical outcomes in CRLM, but none have so far become routine for clinical decision making. For several reasons, the clinical risk score appears to no longer hold the same predictive value. Some of the reasons include the ever expanding indications for liver resection, which now increasingly tend to involve extrahepatic disease, such as lung metastases (both resectable and non-resectable) and the shift in indication from "what is taken out" (e...
March 15, 2017: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28255431/helical-tomotherapy-for-duodenal-adenocarcinoma-in-an-elderly-patient-a-case-report
#12
Valentina Lancellotta, Giuseppe Russo, Marco Lupattelli, Martina Iacco, Elisabetta Perrucci, Claudio Zucchetti, Lorenzo Falcinelli, Cynthia Aristei
To evaluate the efficacy and feasibility of external beam radiotherapy (EBRT) for duodenal adenocarcinoma in an 84-year-old female who underwent EBRT (2.2 Gy/d for a total dose of 46.2 Gy) using helical tomotherapy (HT). Toxicity was evaluated on the National Cancer Institute's common toxicity criteria (CTCAE 3.0). The patient completed the treatment without G3-G4 toxicity. After 22-mo follow-up, she is alive and well, in complete remission with no late side effects. HT seems to be feasible and effective for duodenal adenocarcinoma in old to very old patients...
February 15, 2017: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28255430/bayesian-adjustment-for-over-estimation-and-under-estimation-of-gastric-cancer-incidence-across-iranian-provinces
#13
Nastaran Hajizadeh, Mohamad Amin Pourhoseingholi, Ahmad Reza Baghestani, Alireza Abadi, Mohammad Reza Zali
AIM: To correct the misclassification in registered gastric cancer incidence across Iranian provinces in cancer registry data. METHODS: Gastric cancer data is extracted from Iranian annual of national cancer registration report 2008. A Bayesian method with beta prior is implemented to estimate the rate of misclassification in registering patient's permanent residence in neighboring province. Each time two neighboring provinces with lower and higher than 100% expected coverage of cancer cases are selected to be entered in the model...
February 15, 2017: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28255429/prognostic-significance-of-vascular-endothelial-growth-factor-polymorphisms-in-colorectal-cancer-patients
#14
Gilmar Ferreira do Espírito Santo, Bianca Borsatto Galera, Elisabeth Carmen Duarte, Elisabeth Suchi Chen, Lenuce Azis, Amilcar Sabino Damazo, Gabriela Tognini Saba, Flávia de Sousa Gehrke, Ismael Dale Cotrim Guerreiro da Silva, Jaques Waisberg
AIM: To investigate the associations of the genetic polymorphisms of vascular endothelial growth factor A (VEGF-A) -1498C>T and -634G>C, with the survival of patients with colorectal cancer (CRC). METHODS: A prospective cohort consisting of 131 Brazilians patients consecutively operated on with a curative intention as a result of sporadic colorectal carcinoma was studied. DNA was extracted from peripheral blood and its amplification and allelic discrimination for each genetic polymorphism was performed using the technique of polymerase chain reaction (PCR) in real-time...
February 15, 2017: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28255428/surgical-management-of-hepato-pancreatic-metastasis-from-renal-cell-carcinoma
#15
Nikolaos A Chatzizacharias, Anais Rosich-Medina, Khaled Dajani, Simon Harper, Emmanuel Huguet, Siong S Liau, Raaj K Praseedom, Asif Jah
AIM: To investigate the outcomes of liver and pancreatic resections for renal cell carcinoma (RCC) metastatic disease. METHODS: This is a retrospective, single centre review of liver and/or pancreatic resections for RCC metastases between January 2003 and December 2015. Descriptive statistical analysis and survival analysis using the Kaplan-Meier estimation were performed. RESULTS: Thirteen patients had 7 pancreatic and 7 liver resections, with median follow-up 33 mo (range: 3-98)...
February 15, 2017: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28255427/circular-rnas-in-colorectal-cancer-possible-roles-in-regulation-of-cancer-cells
#16
REVIEW
María Isabel Taborda, Sebastián Ramírez, Giuliano Bernal
Colorectal cancer (CRC) is the third most commonly diagnosed cancer in the world and the fourth principal cause of cancer deaths worldwide. Currently, there is a lack of low cost and noninvasive screening tests for CRC, becoming a serious health problem. In this context, a potential biomarker for the early detection of CRC has recently gained attention. Circular RNAs (circRNA), a re-discovered, abundant RNA specie, is a type of noncoding covalent closed RNAs formed from both exonic and intronic sequences. These circular molecules are widely expressed in cells, exceeding the abundance of the traditional linear mRNA transcript...
February 15, 2017: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28255426/anal-intraepithelial-neoplasia-a-review-of-diagnosis-and-management
#17
REVIEW
Joseph R Roberts, Lacey L Siekas, Andrew M Kaz
Anal intraepithelial neoplasia (AIN) is a premalignant lesion of the anal mucosa that is a precursor to anal cancer. Although anal cancer is relatively uncommon, rates of this malignancy are steadily rising in the United States, and among certain high risk populations the incidence of anal cancer may exceed that of colon cancer. Risk factors for AIN and anal cancer consist of clinical factors and behaviors that are associated with the acquisition and persistence of human papilloma virus (HPV) infection. The strongest HPV-associated risk factors are HIV infection, receptive anal intercourse, and high risk sexual behavior...
February 15, 2017: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28144399/pre-treatment-platelet-counts-as-a-prognostic-and-predictive-factor-in-stage-ii-and-iii-rectal-adenocarcinoma
#18
Morgan Steele, Ioannis A Voutsadakis
AIM: To investigate if pre-treatment platelet counts could provide prognostic information in patients with rectal adenocarcinoma that received neo-adjuvant treatment. METHODS: Platelet number on diagnosis of stage II and III rectal cancer was evaluated in 51 patients receiving neo-adjuvant treatment and for whom there were complete follow-up data on progression and survival, as well as pathologic outcome at the time of surgery. Pathologic responses on the surgical specimen of patients with lower platelet counts (150-300 × 10(9)/L) were compared with these of patients with higher platelet counts (> 300 × 10(9)/L) by the χ(2) test...
January 15, 2017: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28144398/epithelial-mesenchymal-transition-as-a-therapeutic-target-for-overcoming-chemoresistance-in-pancreatic-cancer
#19
REVIEW
Omar Elaskalani, Norbaini Binti Abdol Razak, Marco Falasca, Pat Metharom
Pancreatic cancer has one of the worst prognoses among all cancers due to the late manifestation of identifiable symptoms and high resistance to chemo- and radiation therapies. In recent years, a cancer development phase termed epithelial-mesenchymal transition (EMT) has gained increasing research focus. The process is implicated in tumour metastasis, and emerging evidence suggests EMT also contributes or induces chemoresistance in several cancers. Nevertheless, the applicability of therapeutic targeting of EMT faces many challenges...
January 15, 2017: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28144397/pancreatic-resection-in-very-elderly-patients-a-critical-analysis-of-existing-evidence
#20
REVIEW
Cosimo Sperti, Lucia Moletta, Gioia Pozza
The aging of the population results in a rise of number of elderly patients (aged 80 years and older) with pancreatic or periampullary cancer, and more pancreatectomies could eventually be performed in such complex patients. However, early and long-term results after pancreatic resection in octogenarians are still controversial, and may trouble the surgeon when approaching this type of population. Evaluation of reported experiences shows that for almost all Authors, pancreatectomy can be performed safely in elderly population, although overall morbidity and mortality rates were 34...
January 15, 2017: World Journal of Gastrointestinal Oncology
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