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World Journal of Gastrointestinal Oncology

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https://www.readbyqxmd.com/read/28035254/esophageal-liposarcoma-well-differentiated-rhabdomyomatous-type
#1
Hisham M Valiuddin, Arianna Barbetta, Benedetto Mungo, Elizabeth A Montgomery, Daniela Molena
Rhabdomyomatous well-differentiated esophageal liposarcomas are extremely rare. As of August 2016, only one other such case has been reported in the English-language medical literature. Liposarcomas in general are one of the most common soft tissue neoplasms in adults, but the incidence of primary esophageal liposarcomas is exceptionally low. There have been only 42 reported cases of primary liposarcoma of the esophagus worldwide thus far. These malignancies are harbored within giant fibrovascular polyps, which slowly grow within the esophageal lumen causing obstructing symptoms...
December 15, 2016: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28035253/colon-adenoma-features-and-their-impact-on-risk-of-future-advanced-adenomas-and-colorectal-cancer
#2
Audrey H Calderwood, Karen E Lasser, Hemant K Roy
AIM: To review the evidence on the association between specific colon adenoma features and the risk of future colonic neoplasia [adenomas and colorectal cancer (CRC)]. METHODS: We performed a literature search using the National Library of Medicine through PubMed from 1/1/2003 to 5/30/2015. Specific Medical Subject Headings terms (colon, colon polyps, adenomatous polyps, epidemiology, natural history, growth, cancer screening, colonoscopy, CRC) were used in conjunction with subject headings/key words (surveillance, adenoma surveillance, polypectomy surveillance, and serrated adenoma)...
December 15, 2016: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28035252/signet-ring-colorectal-carcinoma-do-we-need-to-improve-the-treatment-algorithm
#3
Anup Sunil Tamhankar, Parag Ingle, Reena Engineer, Munita Bal, Vikas Ostwal, Avanish Saklani
AIM: To elaborate about this peculiar variant from a tertiary cancer center from India. METHODS: It's a retrospective study (2011-2014) of all patients diagnosed with signet ring colo-rectal cancer (SRCC). Various clinico-pathological variables were studied. RESULTS: One hundred and seventy consecutive patients with SRCC were diagnosed (11.4% of all colorectal cancers). Median Age of the cohort was 41 years. Most common location was recto-sigmoid area (54...
December 15, 2016: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28035251/role-of-circulating-free-dna-in-colorectal-cancer
#4
REVIEW
Alexios Matikas, Alexandra Voutsina, Maria Trypaki, Vassilis Georgoulias
The gradual elucidation of the underlying biology of colorectal cancer has provided new insights and therapeutic options for patients with metastatic disease which are selected according to predictive biomarkers. This precision medicine paradigm, however, is incomplete since not all eligible patients respond to these agents and prognostic stratification is largely based on clinicopathologic variants. Importantly, no robust data exist to help properly select patients with localized disease at high risk for recurrence and most likely to benefit from adjuvant chemotherapy...
December 15, 2016: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28035250/from-traditional-serrated-adenoma-to-tubulovillous-adenoma-and-beyond
#5
REVIEW
Sangeetha N Kalimuthu, Adeline Chelliah, Runjan Chetty
It is well established that colorectal cancer develops from a series of precursor epithelial polyps, including tubular adenomas, villous/tubulovillous adenomas (VA/TVA), sessile serrated adenomas (SSA) and traditional serrated adenomas (TSA). Of these, TSAs are least common and account for only 5% of all serrated polyps. TSAs are characterised by the presence of a "pinecone-like" architecture, granular eosinophilic cytoplasm, luminal serrations, ectopic crypt foci (ECF) and elongated, pencillate nuclei. However, the distinct slit-like luminal serrations, reminiscent of small bowel mucosa, appear to be the most unique and reproducible feature to distinguish TSAs from other polyps...
December 15, 2016: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/27895818/case-of-pseudo-meigs-syndrome-caused-by-gastric-cancer-related-metastatic-ovarian-tumor-with-prolonged-survival
#6
Masaru Okamoto, Kazunori Maeda, Atsushi Yanagitani, Kiwamu Tanaka
A 48-year-old woman presented with bilateral enlarged ovaries, ascites, bilateral pleural effusion, and advanced gastric cancer. Pleural fluid cytology did not reveal malignant cells. Oophorectomy, performed as a palliative procedure, was followed by rapid resolution of the pleural effusion and ascites. The patient was diagnosed with pseudo-Meigs' syndrome, and underwent chemotherapy followed by partial gastrectomy. At the last follow-up, 84 mo following oophorectomy, she was alive, and free of disease recurrence, despite not receiving any further treatment...
November 15, 2016: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/27895817/current-noninvasive-tests-for-colorectal-cancer-screening-an-overview-of-colorectal-cancer-screening-tests
#7
REVIEW
Le-Le Song, Yue-Min Li
Colorectal cancer (CRC) has become the third most common cancer in the world. Screening has been shown to be an effective way to identify early CRC and precancerous lesions, and to reduce its morbidity and mortality. Several types of noninvasive tests have been developed for CRC screening, including the fecal occult blood test (FOBT), the fecal immunochemical test (FIT), the fecal-based DNA test and the blood-based DNA test (the SEPT9 assay). FIT has replaced FOBT and become the major screening test due to high sensitivity, specificity and low costs...
November 15, 2016: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/27895816/clinical-impact-of-chemotherapy-to-improve-tumor-microenvironment-of-pancreatic-cancer
#8
REVIEW
Takahiro Tsuchikawa, Shintaro Takeuchi, Toru Nakamura, Toshiaki Shichinohe, Satoshi Hirano
A perioperative multimodal strategy including combination chemotherapy and radiotherapy, in addition to surgical resection, has been acknowledged to improve patient prognosis. However chemotherapy has not been actively applied as an immunomodulating modality because of concerns about various immunosuppressive effects. It has recently been shown that certain chemotherapeutic agents could modify tumor microenvironment and host immune responses through several underlying mechanisms such as immunogenic cell death, local T-cell infiltration and also the eradication of immune-suppressing regulatory cells such as regulatory T cells (Tregs) and myeloid-derived suppressor cells...
November 15, 2016: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/27895815/molecular-predictive-markers-in-tumors-of-the-gastrointestinal-tract
#9
REVIEW
Eirini Papadopoulou, Vasiliki Metaxa-Mariatou, Georgios Tsaousis, Nikolaos Tsoulos, Angeliki Tsirigoti, Chrisoula Efstathiadou, Angela Apessos, Konstantinos Agiannitopoulos, Georgia Pepe, Eugenia Bourkoula, George Nasioulas
Gastrointestinal malignancies are among the leading causes of cancer-related deaths worldwide. Like all human malignancies they are characterized by accumulation of mutations which lead to inactivation of tumor suppressor genes or activation of oncogenes. Advances in Molecular Biology techniques have allowed for more accurate analysis of tumors' genetic profiling using new breakthrough technologies such as next generation sequencing (NGS), leading to the development of targeted therapeutical approaches based upon biomarker-selection...
November 15, 2016: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/27895814/robotic-rectal-surgery-state-of-the-art
#10
REVIEW
Fabio Staderini, Caterina Foppa, Alessio Minuzzo, Benedetta Badii, Etleva Qirici, Giacomo Trallori, Beatrice Mallardi, Gabriele Lami, Giuseppe Macrì, Andrea Bonanomi, Siro Bagnoli, Giuliano Perigli, Fabio Cianchi
Laparoscopic rectal surgery has demonstrated its superiority over the open approach, however it still has some technical limitations that lead to the development of robotic platforms. Nevertheless the literature on this topic is rapidly expanding there is still no consensus about benefits of robotic rectal cancer surgery over the laparoscopic one. For this reason a review of all the literature examining robotic surgery for rectal cancer was performed. Two reviewers independently conducted a search of electronic databases (PubMed and EMBASE) using the key words "rectum", "rectal", "cancer", "laparoscopy", "robot"...
November 15, 2016: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/27795815/arterial-complication-of-irreversible-electroporation-procedure-for-locally-advanced-pancreatic-cancer
#11
Yahya Ekici, Tugan Tezcaner, Hüseyin Onur Aydın, Fatih Boyvat, Gökhan Moray
Irreversible electroporation (IRE) is a non-thermal ablation technique used especially in locally advanced pancreatic carcinomas that are considered surgically unresectable. We present the first case of acute superior mesenteric artery (SMA) occlusion secondary to pancreatic IRE procedure that has not been reported before in the literature. A 66-year-old man underwent neoadjuvant chemoradiotherapy for locally advanced pancreatic ductal adenocarcinoma. IRE procedure was applied to the patient during laparotomy under general anesthesia...
October 15, 2016: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/27795814/where-does-chemotherapy-stands-in-the-treatment-of-ampullary-carcinoma-a-review-of-literature
#12
REVIEW
Marwan Ghosn, Hampig Raphael Kourie, Elie El Rassy, Fady Ghassan Haddad, Colette Hanna, Fadi El Karak, Dolly Nasr
Ampullary carcinoma (AC) is a rare gastrointestinal tumor without clear treatment recommendations. The management of this tumor is usually extrapolated from the treatment of pancreatic, biliary duct and intestinal cancers. Few papers have studied the AC as an independent entity and yet succombs to several limitations. These studies were retrospective single institutional experiences with limited sample sizes recruited over a long period of time. Unlike metastatic ACs where chemotherapy is the only recommended option, localized AC once excised may be approached by either chemotherapy alone or concomitant chemoradiation therapy...
October 15, 2016: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/27795813/nanomedicine-strategies-for-sustained-controlled-and-targeted-treatment-of-cancer-stem-cells-of-the-digestive-system
#13
REVIEW
Fang-Yuan Xie, Wei-Heng Xu, Chuan Yin, Guo-Qing Zhang, Yan-Qiang Zhong, Jie Gao
Cancer stem cells (CSCs) constitute a small proportion of the cancer cells that have self-renewal capacity and tumor-initiating ability. They have been identified in a variety of tumors, including tumors of the digestive system. CSCs exhibit some unique characteristics, which are responsible for cancer metastasis and recurrence. Consequently, the development of effective therapeutic strategies against CSCs plays a key role in increasing the efficacy of cancer therapy. Several potential approaches to target CSCs of the digestive system have been explored, including targeting CSC surface markers and signaling pathways, inducing the differentiation of CSCs, altering the tumor microenvironment or niche, and inhibiting ATP-driven efflux transporters...
October 15, 2016: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/27795812/mucins-in-neoplasms-of-pancreas-ampulla-of-vater-and-biliary-system
#14
REVIEW
Dimitrios Moschovis, Giorgos Bamias, Ioanna Delladetsima
Tumors of the pancreas, the ampulla of Vater, and the extrahepatic and intrahepatic bile ducts have significant histological similarities due to the common embryonic origin of the pancreatobiliary system. This obviates the need for discovery of biomarkers with diagnostic and prognostic value for these tumors. Mucins, especially MUC-1, -2, -4 and -5AC, are important candidates for developing into such reliable biomarkers. Increased expression of MUC1 occurs in pancreatic ductal adenocarcinomas and is associated with increased degrees of dysplasia in pancreatic intraepithelial neoplasia (PanIN)...
October 15, 2016: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/27795811/current-debate-in-the-oncologic-management-of-rectal-cancer
#15
REVIEW
Trish Millard, Paul R Kunk, Erika Ramsdale, Osama E Rahma
Despite the considerable amount of research in the field, the management of locally advanced rectal cancer remains a subject to debate. To date, effective treatment centers on surgical resection with the standard approach of total mesorectal resection. Radiation therapy and chemotherapy have been incorporated in order to decrease local and systemic recurrence. While it is accepted that a multimodality treatment regimen is indicated, there remains significant debate for how best to accomplish this in regards to order, dosing, and choice of agents...
October 15, 2016: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/27672429/questionnaire-survey-regarding-the-current-status-of-super-extended-lymph-node-dissection-in-japan
#16
Shinji Morita, Takeo Fukagawa, Hisataka Fujiwara, Hitoshi Katai
AIM: To verify the current status of super-extended lymph node dissection for advanced gastric cancer according to a questionnaire survey. METHODS: One-hundred and five institutions responded to the questionnaire. The survey included the following items: Number of experiences, whether performed prophylactically and/or therapeutically, whether preoperative chemotherapy was provided, number of preoperative chemotherapy rounds, and therapeutic options after chemotherapy...
September 15, 2016: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/27672428/delaying-surgery-after-neoadjuvant-chemoradiotherapy-improves-prognosis-of-rectal-cancer
#17
Mehmet Mihmanlı, Esin Kabul Gürbulak, İsmail Ethem Akgün, Mustafa Fevzi Celayir, Pınar Yazıcı, Deniz Tunçel, Tuba Tülin Bek, Ayhan Öz, Sinan Ömeroğlu
AIM: To investigate the prognostic effect of a delayed interval between neoadjuvant chemoradiotherapy (CRT) and surgery in locally advanced rectal cancer. METHODS: We evaluated 87 patients with locally advanced mid- or distal rectal cancer undergoing total mesorectal excision following an interval period after neoadjuvant CRT at Şişli Hamidiye Etfal Training and Research Hospital, Istanbul between January 2009 and January 2014. Patients were divided into two groups according to the interval before surgery: < 8 wk (group I) and ≥ 8 wk (group II)...
September 15, 2016: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/27672427/association-between-serum-vitamin-d-levels-and-gastric-cancer-a-retrospective-chart-analysis
#18
Neil Vyas, Rafael Ching Companioni, Melik Tiba, Hassan Alkhawam, Carmine Catalano, Robert Sogomonian, Joel Baum, Aaron Walfish
AIM: To determine whether there is an increased risk of gastric adenocarcinoma associated with vitamin D deficiency (VDd). METHODS: A retrospective case control study was performed of all patients diagnosed with gastric adenocarcinoma between 2005 and 2015. After we excluded the patients without a documented vitamin D level, 49 patients were included in our study. RESULTS: The average age of patients with gastric adenocarcinoma and documented vitamin D level was 64 years old (95%CI: 27-86) and average vitamin D level was 20...
September 15, 2016: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/27672426/pancreatic-cancer-new-hopes-after-first-line-treatment
#19
REVIEW
Francesca Aroldi, Paola Bertocchi, Giordano Savelli, Edoardo Rosso, Alberto Zaniboni
Pancreatic cancer is the fourth leading cause of cancer-related death worldwide. Extensive research has yielded advances in first-line treatment strategies, but there is no standardized second-line therapy. In this review, we examine the literature trying to establish a possible therapeutic algorithm.
September 15, 2016: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/27672425/molecular-mechanisms-of-chemoresistance-in-gastric-cancer
#20
REVIEW
Wen-Jia Shi, Jin-Bo Gao
Gastric cancer is the fourth most common cancer and the second leading cause of cancer deaths worldwide. Chemotherapy is one of the major treatments for gastric cancer, but drug resistance limits the effectiveness of chemotherapy, which results in treatment failure. Resistance to chemotherapy can be present intrinsically before the administration of chemotherapy or it can develop during chemotherapy. The mechanisms of chemotherapy resistance in gastric cancer are complex and multifactorial. A variety of factors have been demonstrated to be involved in chemoresistance, including the reduced intracellular concentrations of drugs, alterations in drug targets, the dysregulation of cell survival and death signaling pathways, and interactions between cancer cells and the tumor microenvironment...
September 15, 2016: World Journal of Gastrointestinal Oncology
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