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Gastric GIST

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https://www.readbyqxmd.com/read/27885685/gastric-and-small-intestine-gastrointestinal-stromal-tumors-do-outcomes-differ
#1
Katherine Giuliano, Neeraja Nagarajan, Joseph Canner, Alireza Najafian, Christopher Wolfgang, Eric Schneider, Christian Meyer, Anne Marie Lennon, Fabian M Johnston, Nita Ahuja
BACKGROUND AND OBJECTIVES: Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal tumors of the gastrointestinal tract. Previous literature has suggested that small intestine GISTs are more aggressive than gastric GISTs. Our primary objective was to compare the outcomes of gastric and small intestine GISTs in the decade after approval of imatinib for treatment. METHODS: The SEER database was queried for cases of gastric and small intestine GIST between the years 2002 and 2012, using the ICD-O-3 histology code 8936...
November 25, 2016: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/27864722/comparison-between-submucosal-tunneling-endoscopic-resection-and-endoscopic-full-thickness-resection-for-gastric-stromal-tumors-originating-from-the-muscularis-propria-layer
#2
Yuyong Tan, Xiaoyu Tang, Ting Guo, Dongzi Peng, Yao Tang, Tianying Duan, Xuehong Wang, Liang Lv, Jirong Huo, Deliang Liu
BACKGROUND: Both submucosal tunneling endoscopic resection (STER) and endoscopic full-thickness resection (EFTR) are effective method for treating gastric gastrointestinal stromal tumors (GISTs); however, little is known about the comparison between STER and EFTR. The aim of the study was to compare the safety and efficacy of STER and EFTR for treating gastric GIST. METHODS: We retrospectively collected the clinical data about patients with gastric GISTs who received STER or EFTR at our hospital from April 2011 to June 2016...
November 18, 2016: Surgical Endoscopy
https://www.readbyqxmd.com/read/27864688/detection-of-mutations-in-the-braf-gene-in-patients-with-kit-and-pdgfra-wild-type-gastrointestinal-stromal-tumors
#3
Karin Jasek, Veronika Buzalkova, Gabriel Minarik, Andrea Stanclova, Peter Szepe, Lukas Plank, Zora Lasabova
Gastrointestinal stromal tumors (GISTs) are characterized by mutations in exons 9, 11, 13, and 17 of KIT or exons 12, 14, and 18 of PDGFRA gene. However, approximately 10 to 15 % of GISTs lack the mutations in KIT and PDGFRA, and these are referred to as wild-type GISTs which are less sensitive to tyrosine-kinase inhibitors. The aim of this study was to detect BRAF mutations in patients with wild-type GISTs. We applied a sensitive allele-specific PCR, which was optimized using the V600E mutation-harboring cell line RKO, followed by verification of the results by dideoxy sequencing...
November 18, 2016: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/27846844/a-rare-case-with-synchronous-gastric-gastrointestinal-stromal-tumor-pancreatic-neuroendocrine-tumor-and-uterine-leiomyoma
#4
Elena Arabadzhieva, Atanas Yonkov, Sasho Bonev, Dimitar Bulanov, Ivanka Taneva, Alexandrina Vlahova, Tihomir Dikov, Violeta Dimitrova
BACKGROUND: Although gastrointestinal stromal tumors (GISTs) are the most common mesenchymal tumors of the gastrointestinal tract, they comprise less than 1% of all gastrointestinal tumors. Neuroendocrine tumors (NET) of the gastro-enteropancreatic system are also rare, representing about 2% of all gastrointestinal neoplasms. Pancreatic localization of NET is extremely uncommon-these tumors are only 1-5% of all pancreatic cancers. CASE PRESENTATION: We describe an unusual case with triple tumor localization-a gastric tumor, a formation in the pancreas, which involves the retroperitoneal space, and a uterine leiomyoma...
November 15, 2016: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/27845908/endoscopic-versus-laparoscopic-resection-of-gastric-gastrointestinal-stromal-tumors-a-multicenter-study
#5
Wei-Jie Dai, Gao Liu, Min Wang, Wen-Jie Liu, Wei Song, Xiao-Zhong Yang, Qi-Long Wang, Xiao-Yu Zhang, Zhi-Ning Fan
Despite endoscopic resection has been performed to treat gastric gastrointestinal stromal tumor (GISTs). However, the safety and long-term outcomes remains controversial. This study aims to compare the safety and surgical outcomes of endoscopic versus laparoscopic resection of gastric GISTs. A total of 335 patients that were pathologically confirmed with gastric GISTs (tumor size ≤ 3.5 cm) were surgically treated with endoscopic resection (endoscopic group) or laparoscopic resection (laparoscopic group) in three institutions from March 1, 2011 to October 1 2014...
November 11, 2016: Oncotarget
https://www.readbyqxmd.com/read/27828865/clinicopathological-features-and-prognosis-of-coexistence-of-gastric-gastrointestinal-stromal-tumor-and-gastric-cancer
#6
Zhen Liu, Shushang Liu, Gaozan Zheng, Jianjun Yang, Liu Hong, Li Sun, Daiming Fan, Hongwei Zhang, Fan Feng
The coexistence of gastric gastrointestinal stromal tumor (GIST) and gastric cancer is relatively high, and its prognosis is controversial due to the complex and variant kinds of presentation. Thus, the present study aimed to explore the clinicopathological features and prognostic factors of gastric GIST with synchronous gastric cancer.From May 2010 to November 2015, a total of 241 gastric GIST patients were retrospectively enrolled in the present study. The patients with coexistence of gastric GIST and gastric cancer were recorded...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27795705/cd63-and-glut-1-overexpression-could-predict-a-poor-clinical-outcome-in-gist-a-study-of-54-cases-with-follow-up
#7
Piotr Lewitowicz, Jarosław Matykiewicz, Dorota Koziel, Magdalena Chrapek, Agata Horecka-Lewitowicz, Stanislaw Gluszek
Background and Goals. In light of current knowledge, it seems that alternations underlying GISTs are well explained, although all that is enhanced by various aspects on a daily basis. More recently, attention has been pointed towards exosomes as important particles able to modify healthy and also diseased tissues including cancer. The goal of the present study was an analysis of CD9, CD63, and GLUT-1 as a marker of hypoxia status within 54 cases of GIST and evaluation of their predictive value. Methods. 54 cases of patients suffering from GIST were enrolled into the study, predominantly in the gastric location...
2016: Gastroenterology Research and Practice
https://www.readbyqxmd.com/read/27793944/imatinib-induced-gastrointestinal-vascular-ectasia-in-a-patient-with-advanced-gist-case-report-and-literature-review
#8
Mahmoud Abu-Amna, Halim Awadie, Gil Bar-Sela
BACKGROUND: Imatinib is generally well tolerated in the treatment of advanced gastrointestinal stromal tumors (GIST). Gastrointestinal vascular ectasia (GIVE) and gastric antral vascular ectasia (GAVE), while rare, are significant under-reported complications of imatinib therapy. CASE REPORT: We present one patient with GIVE complicating imatinib therapy with a literature review of this rare side-effect. RESULTS: A 68-year-old woman was diagnosed with advanced GIST, wild-type CKIT...
November 2016: Anticancer Research
https://www.readbyqxmd.com/read/27788385/laparoscopic-resection-of-a-gastric-schwannoma-a-case-report
#9
Edgar Vargas Flores, Francisco Bevia Pérez, Pablo Ramirez Mendoza, José Arturo Velázquez García, Oscar Alejandro Ortega Román
INTRODUCTION: Mesenchymal tumors of the gastrointestinal tract are a group spindle cell tumors which include gastrointestinal stromal tumors, leiomyomas, leiomyosarcomas and schwannomas (Nishida and Hirota, 2000). Schwannomas generally present as a slow and asymptomatic growing mass in the gastrointestinal tract typically arising in the gastric submucosa accounting for up to 0.2% of gastric tumors (Melvin and Wilkinson, 1993; Sarlomo-Rikala M, Miettinen, 1995). TREATMENT: with negative surgical margin resection (as approached in this case) is considered the standard treatment...
October 20, 2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/27771813/a-case-of-multiple-gastrointestinal-stromal-tumors-caused-by-a-germline-kit-gene-mutation-p-leu576pro
#10
Rita Vale Rodrigues, Filipa Santos, João Pereira da Silva, Inês Francisco, Isabel Claro, Cristina Albuquerque, Maria Manuel Lemos, Manuel Limbert, António Dias Pereira
Multiple gastrointestinal stromal tumors (GISTs) caused by germline KIT gene mutations are an extremely rare autosomal dominant disorder. We report a case of a 21-year-old woman who presented to the emergency department with a 2-week history of asthenia, palpitations and upper gastrointestinal bleeding. After further clinical evaluation one gastric and two small bowel GISTs were diagnosed, which were surgically resected after neoadjuvant therapy with Imatinib. Diffuse hyperplasia of the interstitial cells of Cajal was also seen in the background gastric and small intestinal walls...
October 22, 2016: Familial Cancer
https://www.readbyqxmd.com/read/27721724/gastrointestinal-stromal-tumor-of-the-stomach-with-an-abscess-excised-by-laparoscopic-surgery
#11
Yoshiaki Maeda, Toshiki Shinohara, Tomonari Katayama, Akihisa Nagatsu, Noriaki Futakawa, Tomonori Hamada
Gastrointestinal stromal tumors (GISTs) of the stomach presenting as an intra-abdominal abscess are extremely rare. We herein report a case that underwent successful laparoscopic resection of gastric GIST presenting with an intra-abdominal abscess. A 70-year-old man presented with a 3-day history of acute upper abdominal pain with a fever. Laboratory data showed an elevated white blood cell count and C-reactive protein level. A CT scan revealed a mass of mixed solid and fluid components, measuring 5.5 cm, in the adjacent lesser curvature of the stomach...
May 2016: Case Reports in Gastroenterology
https://www.readbyqxmd.com/read/27709855/using-forceps-biopsy-after-small-submucosal-dissection-in-the-diagnosis-of-gastric-subepithelial-tumors
#12
Yoon Suk Jung, Hyuk Lee, Kyungeun Kim, Jin Hee Sohn, Hong Joo Kim, Jung Ho Park
The current tissue sampling techniques for subepithelial tumors (SETs) of the gastrointestinal (GI) tract have limited diagnostic efficacy. We evaluated the diagnostic yield and safety of forceps biopsies after small endoscopic submucosal dissection (SESD biopsies) in the diagnosis of gastric SETs. A total of 42 patients with gastric SETs > 10 mm were prospectively enrolled between May 2013 and October 2014. A dual knife was used to incise the mucosa and submucosa and forceps biopsies were then introduced deep into the lesion...
November 2016: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/27698892/atypical-presentation-of-a-gastric-stromal-tumor-masquerading-as-a-giant-intraabdominal-cyst-a-case-report
#13
Ke-Kang Sun, Song Xu, Jinzhen Chen, Gang Liu, Xiaojun Shen, Xiaoyang Wu
Gastrointestinal stromal tumors (GISTs) are mesenchymal neoplasms that arise in the gastrointestinal tract, accounting for ~1% of gastric malignancies. The present study reports the case of a GIST of the stomach in a 75-year-old man who presented with abdominal distension and anorexia for 1 month. Gastroscopy was unremarkable. Ultrasound and computed tomography (CT) scans showed a giant intraabdominal cystic lesion of unknown origin. The lesion was initially believed to be a duplication cyst, a pancreatic pseudocyst or a liver cyst in the pre-operative diagnosis...
October 2016: Oncology Letters
https://www.readbyqxmd.com/read/27692910/would-you-unblind-the-patient-a-case-of-incidental-t1-n0-r0-gist-in-a-randomized-controlled-trial-of-sleeve-gastrectomy-versus-roux-en-y-gastric-bypass-for-morbid-obesity
#14
Felix Nickel, Pascal Probst, Lars Fischer
No abstract text is available yet for this article.
August 31, 2016: Surgery for Obesity and related Diseases: Official Journal of the American Society for Bariatric Surgery
https://www.readbyqxmd.com/read/27689519/gastric-gist-or-gastric-schwannoma-a-diagnostic-dilemma-in-a-young-female
#15
Sudhir Kumar Mohanty, Kumarmani Jena, Tanmaya Mahapatra, Jyoti Ranjan Dash, Dibyasingh Meher, Ajax John, Manjushree Nayak, Shafqat Bano
INTRODUCTION: Gastrointestinal stromal tumor (GIST) is the commonest mesenchymal tumor of GI tract and 60-70% of it seen in the stomach, whereas Gastric schwannoma is a benign, slow growing and one of the rare neoplasms of stomach. Age distribution, clinical, radiological features and gross appearance of both tumors are similar. PRESENTATION OF CASE: We report a rare case of gastric schwannoma in a 20-year-old girl, who underwent subtotal gastrectomy with the suspicion of a GIST preoperatively but later confirmed to be gastric schwannoma postoperatively after immunohistochemical study...
September 22, 2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/27673752/pancreatic-gastrointestinal-stromal-tumor-clinicopathologic-features-and-prognosis
#16
Zhen Liu, Yangzi Tian, Guanghui Xu, Shushang Liu, Man Guo, Xiao Lian, Daiming Fan, Hongwei Zhang, Fan Feng
GOALS: The present study aimed to investigate the clinicopathologic features and prognosis of pancreatic gastrointestinal stromal tumor (GIST). BACKGROUND: Reports on clinicopathologic features and prognosis of pancreatic GIST are limited due to the extremely rare incidence. STUDY: One case of pancreatic GIST from our center and 44 cases reported in MEDLINE were enrolled in this study. Clinicopathologic features and prognosis of pancreatic GISTs were analyzed and compared with 297 gastric GISTs from our center...
September 26, 2016: Journal of Clinical Gastroenterology
https://www.readbyqxmd.com/read/27668229/a-rare-case-of-metastatic-germ-cell-tumor-to-stomach-and-duodenum-masquerading-as-signet-ring-cell-adenocarcinoma
#17
Srijan Mazumdar, Sridhar Sundaram, Prachi Patil, Shaesta Mehta, Mukta Ramadwar
Adenocarcinomas are the most common cancers affecting stomach. However gastrointestinal stromal tumors (GIST), lymphomas and neuroendocrine tumors (NETs) can also affect the stomach. But stomach is relatively rare site of involvement by metastasis. In this case report a rare metastasis of germ cell tumor (GCT) into stomach is described which clinically and endoscopically masquerade as primary gastric cancers. But detailed clinical examination and vigilant histopathological reporting proves the origin of tumor distant from stomach and thereby change the whole approach of management...
August 2016: Annals of Translational Medicine
https://www.readbyqxmd.com/read/27661206/gastrointestinal-stromal-tumor-of-stomach-a-gentle-enemy-of-the-surgeon-our-experience-in-confronting-the-disease
#18
Vyacheslav Bard, Nikolai Menasherov, Sara Morgenstern, Riad Haddad, Hanoch Kashtan
BACKGROUND: Surgical resection is considered to be the best treatment for gastrointestinal stromal tumor (GIST), the most common mesenchymal tumor of the gastrointestinal tract. Tumor size, mitotic rate, and anatomic locations are directly related to the potential malignancy, surgical approach, oncological treatment, and recurrence rate. MATERIALS AND METHODS: This was a retrospective study of 40 patients who underwent surgical resection of histologically or immunohistochemistry-proven GIST of the stomach at the Rabin and Kaplan Medical Center between 2004 and 2013...
October 2016: Surgical Laparoscopy, Endoscopy & Percutaneous Techniques
https://www.readbyqxmd.com/read/27631317/laparoscopic-wedge-resection-for-suspected-large-%C3%A2-5%C3%A2-cm-gastric-gastrointestinal-stromal-tumors
#19
Chun Yuet Khoo, Brian K P Goh, Alvin K H Eng, Weng-Hoong Chan, Melissa C C Teo, Alexander Y F Chung, Hock-Soo Ong, Wai-Keong Wong
BACKGROUND: Laparoscopic wedge resection (LWR) for small gastric gastrointestinal stromal tumors (GIST) is now widely accepted, but its application for large GISTs remains controversial. This study aims to evaluate the feasibility and safety of LWR for suspected large (≥5 cm) gastric GISTs. METHODS: Retrospective review of 82 consecutive patients who underwent attempted LWR for suspected gastric GIST. LWR for large (≥5 cm) (n = 23) tumors was compared with LWR for small (<5 cm) tumors (n = 59)...
September 8, 2016: Surgical Endoscopy
https://www.readbyqxmd.com/read/27628557/-a-case-of-resected-giant-gastrointestinal-stromal-tumor-associated-with-intraperitoneal-bleeding-following-imatinib-administration
#20
Ryuta Ide, Takahisa Suzuki, Yuji Takakura, Akihiko Oshita, Satoshi Ikeda, Yasuhiro Matsugu, Hideki Nakahara, Takashi Urushihara, Toshiyuki Itamoto, Katsunori Shinozaki
A 76-year-old woman with tarry stool was referred to our hospital for further examination. Contrast-enhanced computed tomography(CT)revealed a heterogeneous 15 cm tumor located in the left upper abdominal cavity. The tumor had a rich vascularity and was associated with intra-abdominal bleeding. Gastroscopy showed a large submucosal tumor in the gastric body. A biopsy was performed, and the patient was diagnosed with a c-kit-positive gastrointestinal stromal tumor(GIST)of the stomach. Imatinib mesylate(400mg/day)was administered for 6 months...
September 2016: Gan to Kagaku Ryoho. Cancer & Chemotherapy
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