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Gastrointestinal stromal tumor

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https://www.readbyqxmd.com/read/28916847/endoscopic-resection-of-gastric-gastrointestinal-stromal-tumors-originating-from-the-muscularis-propria-layer-in-north-america-methods-and-feasibility-data
#1
Iman Andalib, Daniel Yeoun, Ramesh Reddy, Steve Xie, Shahzad Iqbal
INTRODUCTION: Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal tumors of the gastrointestinal tract. In recent years, endoscopic procedures such as endoscopic enucleation (EN) and endoscopic full-thickness resection (EFTR) have been used to resect GISTs. This study aimed to investigate the clinical efficacy, safety, and feasibility of endoscopic resection of GISTs in a North American population. METHODS: A total of 25 patients with gastric submucosal lesions (SML) underwent endoscopic resection from December 2014 to April 2016...
September 15, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28915580/molecular-and-functional-characterization-of-a-new-3-end-kit-juxtamembrane-deletion-in-a-duodenal-gist-treated-with-neoadjuvant-imatinib
#2
Vittorio Perfetti, Erik Laurini, Suzana Aulić, Maurizio Fermeglia, Roberta Riboni, Marco Lucioni, Elena Dallera, Sara Delfanti, Luigi Pugliese, Francesco Saverio Latteri, Andrea Pietrabissa, Sabrina Pricl
Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal tumors of the gastrointestinal tract. GISTs express the receptor tyrosine kinase KIT, and the majority of GISTs present KIT gain-of-function mutations that cluster in the 5' end of the receptor juxtamembrane domain. On the other hand, little information is known about GISTs carrying mutations in the 3' end of the KIT juxtamembrane domain. Here we report and discuss a clinical case of localized duodenal GIST whose molecular characterization revealed the presence of a new 21 nucleotide/7 amino acid deletion in the 3' end of KIT juxtamembrane domain (Δ574-580)...
August 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28915565/pkc%C3%AE-utility-in-diagnosing-c-kit-dog-1-double-negative-gastrointestinal-stromal-tumors
#3
Attila Kövecsi, Ioan Jung, Zoltan Szentirmay, Tivadar Bara, Tivadar Bara, Daniel Popa, Simona Gurzu
BACKGROUND: The aim of this study was to evaluate the diagnosis value of an immunohistochemical (IHC) panel of three antibodies for the diagnosis of gastrointestinal stromal tumors (GISTs). MATERIAL AND METHODS: In 80 consecutive GISTs without lymph node metastases, the IHC examinations were performed using the antibodies CD117 (c-KIT), DOG-1 and c-theta (PKCθ) protein. The diagnostic value of PKCθ in c-KIT/DOG-1 negative GISTs has been explored in fewer than 10 Medline-indexed papers...
August 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28914399/surgery-for-duodenal-gastrointestinal-stromal-tumors-a-single-center-experience
#4
Ping Chen, Tianqiang Song, Xin Wang, Hongyuan Zhou, Ti Zhang, Qiang Wu, Dalu Kong, Yunlong Cui, Huikai Li, Qiang Li
BACKGROUND: The duodenal gastrointestinal stromal tumors (GISTs) are an extremely rare subset of GISTs. The optimal surgical procedure remains not well defined. AIMS: We assessed the surgical approach and long-term outcomes of patients with duodenal GISTs who underwent limited resection (LR) versus pancreaticoduodenectomy (PD). METHODS: From November 2005 to January 2016, 64 consecutive patients with duodenal GISTs in a single center were retrospectively analyzed...
September 15, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28912818/a-successfully-treated-case-of-gastrointestinal-stromal-tumor-causing-severe-anemia-and-localized-peritonitis-showing-angina-pectoris-resulting-in-watershed-cerebral-infarction
#5
Yoshihide Sehara, Yuka Hayashi, Kenichi Ohya, Naoki Kaneko, Mikio Sawada
Ischemic stroke following acute myocardial infarction is a rare but a serious complication. Because the pathophysiology of stroke is dynamic, it is often hard to identify the cause of stroke. Here, we present the case of a 75-year-old man with ischemic stroke following angina pectoris caused by severe anemia and localized peritonitis due to gastrointestinal stromal tumor of small intestine. On admission, he showed consciousness disturbance, fever, and left hemiplegia. The electrocardiogram on admission showed ST-segment depression in V2 to V6 which was normalized 4 hours later...
2017: Case Reports in Medicine
https://www.readbyqxmd.com/read/28904693/-gastrointestinal-stromal-tumors-gist-status-and-news-through-our-experience-on-54-cases-and-review-of-literature
#6
Nezha Taoufiq, Asmaa Naim, Zineb Bouchbika, Nadia Benchekroune, Hassan Jouhadi, Souha Sahraoui, Abdelatif Benider
Tumors Gastrointestinal Stromal "GIST" are a very rare form of digestive tract cancers belonging to the family of sarcomas. The aim of this study is to establish the epidemiological profile, the diagnostic and therapeutic difficulties of this malignancy supported in a developing country. A retrospective study spread over 8 years from January 2002 to March 2010, was conducted at the Department of Radiotherapy and Oncology of Casablanca (Morocco) have collated 54 cases of Gastrointestinal Stromal tumors. The average age of our patients was 55 years...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28901002/-current-research-status-and-progress-of-primary-esophageal-gastrointestinal-stromal-tumors-in-china
#7
Guoren Li, Jianhua Dai
Primary esophageal gastrointestinal stromal tumors (GIST) is a rare independent disease with clinicopathological and molecular features different from other mesenchymal tumors. Authors searched and reviewed associated reports and summarized the morbidity trends, characteristics, diagnosis and treatment of esophageal GIST in China. Data show that the incidence and detection rate of esophageal GIST presents the rising trend. Imaging has some characteristics. Ultrasonography and CT are main methods and effective examinations to detect and prompt diagnosis of esophageal GIST...
September 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28900995/-association-between-genetic-polymorphisms-and-variation-of-imatinib-pharmacokinetics-in-gastrointestinal-stromal-tumors
#8
Haibo Qiu, Wei Zhuang, Xueding Wang, Min Huang, Zhiwei Zhou
OBJECTIVE: To investigate the influence of metabolic enzymes polymorphisms on variations of imatinib (IM) pharmacokinetics in gastrointestinal stromal tumors (GIST) patients. METHODS: Clinical data of 118 Chinese GIST patients receiving 400 mg/d IM at Sun Yat-sen University Cancer Center between 2014 and 2016 were retrospectively analyzed. The plasma concentration of imatinib mesylate(IM) and its main metabolic N-demethyl imatinib (NDI) were determined by LC-MS/MS...
September 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28900994/-analysis-of-gastric-gastrointestinal-stromal-tumors-in-shandong-province-a-midterm-report-of-multicenter-gissg1201-study
#9
Qingsheng Hou, Wenqiang Luo, Leping Li, Yong Dai, Lixin Jiang, Ailiang Wang, Xianqun Chu, Yuming Li, Daogui Yang, Chunlei Lu, Linguo Yao, Gang Cui, Huizhong Lin, Gang Chen, Qing Cui, Huanhu Zhang, Zengjun Lun, Lijian Xia, Yingfeng Su, Guoxin Han, Xizeng Hui, Zhixin Wei, Zuocheng Sun, Hongliang Guo, Yanbing Zhou
OBJECTIVE: To summarize the treatment status of gastric gastrointestinal stromal tumor (GIST) in Shandong province,by analyzing the clinicopathological features and prognostic factors. METHODS: Clinicopathological and follow-up data of 1 165 patients with gastric GIST between January 2000 and December 2013 from 23 tertiary referral hospitals in Shandong Province were collected to establish a database. The risk stratification of all cases was performed according to the National Institutes of Health(NIH) criteria proposed in 2008...
September 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28900993/-comparison-of-modified-nih-and-afip-risk-stratification-criteria-for-gastrointestinal-stromal-tumors-a-multicenter-retrospective-study
#10
Tao Chen, Haibo Qiou, Xingyu Feng, Peng Zhang, Liangying Ye, Yanfeng Hu, Hao Liu, Jiang Yu, Kaixiong Tao, Yong Li, Zhiwei Zhou, Guoxin Li
OBJECTIVE: To evaluate and compare the value of Modified NIH criteria and AFIP criteria for the risk classification of gastrointestinal stromal tumors (GIST). METHODS: Clinicopathological and follow-up data of 539 patients diagnosed as primary GIST with or without irregular tyrosine kinase inhibitors in the Nanfang Hospital(n=143), Sun Yat-sen University Cancer Center (n=138), Guangdong Provincial People's Hospital (n=102) and Wuhan Union Hospital (n=156) from January 2012 to December 2015 were retrospectively analyzed...
September 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28900984/-targeted-therapy-combined-with-immunotherapy-in-gastrointestinal-stromal-tumor-a-new-era-of-hope-and-challenges
#11
Wenyi Zhao, Hui Cao
New immunotherapy represented by immune checkpoint inhibitor therapy and chimeric antigen receptor T-Cell immunotherapy (CAR-T) has already become hot trend in the treatment of malignant tumors. In gastrointestinal stromal tumor (GIST), with notable tumor-infiltrating immune cells existing in GIST tissues and immunological effects reported in imatinib mesylate (IM) treatment, the clinicians and researchers started to realize the possibilities of immunotherapy in GIST. Recent studies reported that PD-1/PD-L1 or CTLA-4 blockade may enhance the T-cell activity and anti-tumor effect of targeted therapy, which can be applied in advanced GIST, and anti-KIT CAR T-cells indicated a new immunotherapeutic targeted strategy for GIST patients with TKI resistance...
September 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28900983/-updates-on-adjuvant-therapy-in-gastrointestinal-stromal-tumor
#12
Haibo Qiu, Xiaowei Sun, Zhiwei Zhou
Surgery remains the primary treatment for patients with localized gastrointestinal stromal tumor (GIST), however, even after complete resection of the tumor, there is still a part of patients with tumor recurrence and metastasis. Imatinib, as adjuvant therapy in GIST patients with intermediate and high risk of recurrence, can significantly improve the disease-free survival, but whether it can prolong the overall survival is still unknown. It has reached a consensus that the intermediate and high risk patients should receive adjuvant therapy, but the duration for adjuvant therapy is still under investigation, especially for high-risk patients...
September 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28900381/the-association-of-vimentin-and-fibronectin-gene-expression-with-epithelial-mesenchymal-transition-and-tumor-malignancy-in-colorectal-carcinoma
#13
Zohreh Niknami, Ali Eslamifar, Amirnader Emamirazavi, Alireza Ebrahimi, Reza Shirkoohi
Colorectal cancer is the most common malignancy of the gastrointestinal tract with very high mortality. One of the most distinguishing features for the establishment of an epithelial-mesenchymal transition phenotype is the alteration of mesenchymal markers expression and structural adhesion proteins. We evaluated the significance of vimentin and fibronectin gene expression in relation to invasion and metastasis in CRC patients. Tissue specimens were collected consecutively from forty-five colorectal carcinoma patients during surgeries...
2017: EXCLI journal
https://www.readbyqxmd.com/read/28900071/a-case-of-non-islet-cell-tumor-hypoglycemia-nicth-associated-with-gastrointestinal-stromal-tumor-gist
#14
John M Wilson, Jessica Ginsberg, Karen Cutts, Steve Urban
BACKGROUND Non-islet cell tumor hypoglycemia (NICTH) is a newly recognized, but uncommon, paraneoplastic syndrome that is associated with tumors of mesenchymal origin. We report a case of NICTH associated with a gastrointestinal stromal tumor (GIST). CASE REPORT A 60-year-old man presented to the emergency department of our hospital after being found unconscious in his home. His serum blood glucose on hospital admission was 40 mg/dL. He reported a three-month history of diffuse abdominal pain, fatigue, and blurred vision...
September 13, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28898989/role-of-histone-h3k27-trimethylation-loss-as-a-marker-for-malignant-peripheral-nerve-sheath-tumor-in-fine-needle-aspiration-and-small-biopsy-specimens
#15
Jeffrey K Mito, Xiaohua Qian, Leona A Doyle, Jason L Hornick, Vickie Y Jo
Objectives: Accurate diagnosis of malignant peripheral nerve sheath tumor (MPNST) is often challenging on fine-needle aspiration (FNA) or core needle biopsy. Recurrent mutations in EED and SUZ12, which encode subunits of polycomb repressive complex 2 (PRC2), have been identified in 70% to 92% of MPNSTs; PRC2 inactivation leads to loss of trimethylation of lysine 27 of histone H3 (H3K27me3). We evaluated the utility of H3K27me3 immunohistochemistry for distinguishing MPNST from its cytomorphologic mimics...
August 1, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28894578/giant-gastrointestinal-stromal-tumor-of-the-vermiform-appendix-a-case-report
#16
Manabu Kaneko, Kazushige Kawai, Koji Murono, Takeshi Nishikawa, Kazuhito Sasaki, Kensuke Otani, Koji Yasuda, Toshiaki Tanaka, Tomomichi Kiyomatsu, Keisuke Hata, Hiroaki Nozawa, Soichiro Ishihara, Akimasa Hayashi, Aya Shinozaki-Ushiku, Masashi Fukayama, Toshiaki Watanabe
Gastrointestinal stromal tumors (GISTs) of the vermiform appendix are rare, measuring <3 cm in 82.4% of the reported cases. Neoadjuvant therapy with the receptor tyrosine kinase inhibitor imatinib mesylate has the potential to improve resectability and organ preservation rates in locally advanced or metastatic/recurrent GISTs. We herein report the case of a 67-year-old male patient with an unusually large GIST (22 cm in diameter) of uncertain origin in the right lower abdominal quadrant, with a solitary peritoneal metastasis...
September 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28889157/epidemiologic-characteristics-of-gastric-malignancies-among-jordan-university-hospital-patients
#17
Heyam A Awad, Manar H Hajeer, Mohand W Abulihya, Mohammad A Al-Chalabi, Ali A Al Khader
To discover the epidemiologic distribution of gastric malignancies among Jordan University Hospital patients and to compare this distribution with the neighboring Arab countries. Methods: Retrospective study covering the period between  January 2006, and May 2016, in Jordan University Hospital, Amman, Jordan. All cases were retrieved from the computer system and analyzed using IBM SPSS version 23 software.  Results: One hundred and sixty-five cases were analyzed. Male-to-female ratio was 1.2:1. The mean age was 58...
September 2017: Saudi Medical Journal
https://www.readbyqxmd.com/read/28888914/acute-diffuse-peritonitis-due-to-spontaneous-rupture-of-a-primary-gastrointestinal-stromal-tumor-of-the-jejunum-a-case-report
#18
Koki Sato, Hirofumi Tazawa, Seiji Fujisaki, Sotaro Fukuhara, Koki Imaoka, Yuzo Hirata, Mamoru Takahashi, Saburo Fukuda, Yoshio Kuga, Toshihiro Nishida, Hideto Sakimoto
INTRODUCTION: Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal tumors of the gastrointestinal tract. Overt peritonitis caused by GIST rupture is very uncommon. Three types of GIST rupture have been described: closed perforation due to abscess (abscess type), hemoperitoneum leading to rupture of the hematoma capsule in the tumor (hemoperitoneum type), and perforation of the digestive tract via a fistula leading to central necrosis of the tumor (bowel perforation type)...
August 23, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28883708/rarity-among-benign-gastric-tumors-plexiform-fibromyxoma-report-of-two-cases
#19
Kinga Szurian, Holger Till, Eva Amerstorfer, Nicole Hinteregger, Hans-Jörg Mischinger, Bernadette Liegl-Atzwanger, Iva Brcic
Plexiform fibromyxoma is a very rare mesenchymal tumor of the stomach, found almost exclusively in the antrum/pylorus region. The most common presenting symptoms are anemia, hematemesis, nausea and unintentional weight loss, without sex or age predilection. We describe here two cases of plexiform fibromyxoma, involving a 16-year-old female and a 34-year-old male. Both patients underwent complete resection (R0) by distal gastrectomy and retrocolic gastrojejunostomy (according to Billroth 2); for both, the postoperative course was uneventful...
August 21, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28882125/evidence-mapping-based-on-systematic-reviews-of-therapeutic-interventions-for-gastrointestinal-stromal-tumors-gist
#20
Mónica Ballesteros, Nadia Montero, Antonio López-Pousa, Gerard Urrútia, Ivan Solà, Gabriel Rada, Hector Pardo-Hernandez, Xavier Bonfill
BACKGROUND: Gastrointestinal Stromal Tumours (GISTs) are the most common mesenchymal tumours. Currently, different pharmacological and surgical options are used to treat localised and metastatic GISTs, although this research field is broad and the body of evidence is scattered and expanding. Our objectives are to identify, describe and organise the current available evidence for GIST through an evidence mapping approach. METHODS: We followed the methodology of Global Evidence Mapping (GEM)...
September 7, 2017: BMC Medical Research Methodology
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