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Gastrointestinal mesenchymal tumor

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https://www.readbyqxmd.com/read/28198176/what-is-changing-in-the-surgical-treatment-of-gastrointestinal-stromal-tumors-after-multidisciplinary-approach-a-comprehensive-literature-s-review
#1
Belinda De Simone, Luca Ansaloni, Massimo Sartelli, Federico Coccolini, Salomone Di Saverio, Maria A Pantaleo, Maristella Saponara, Margherita Nannini, Harishine K Abongwa, Josephine A Napoli, Fausto Catena
INTRODUCTION: GIST represent the most common mesenchymal neoplasms of the gastrointestinal tract Surgery is the only curative treatment for GIST. The aim of our review is to highlight the changes in the surgical treatment of GIST after the introduction of TKI therapy in a multimodality management ( neo-adiuvant or adiuvant setting). EVIDENCE ACQUISITION: We carried out a review of the recent literature about surgical treatment of GIST according to its anatomical location and size according to PRISMA STATEMENT to systematic review...
February 14, 2017: Minerva Chirurgica
https://www.readbyqxmd.com/read/28195260/everything-you-always-wanted-to-know-about-gist-but-were-afraid-to-ask-an-update-on-gist-pathology
#2
R Ricci, L Saragoni
Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal tumors of the gastrointestinal tract. The discovery of the occurrence of activating KIT mutations and KIT expression in GISTs opened the way to the unequivocal diagnosis of these tumors and to their successful treatment with imatinib, a tyrosin kinase inhibitor. Since then, research progress revealed molecular GIST triggers alternative to KIT, implying heterogeneous analytic approaches and prognostic expectations. Several targeted therapies, variably specific for each GIST trigger, have been developed or are being investigated...
September 2016: Pathologica
https://www.readbyqxmd.com/read/28191810/gist-institutional-experience-at-srms-ims-india
#3
Shubhanshu Gupta, Keshri Amit, Ashish Gupta, Tanu Argawal
Gastro-Intestinal Stromal Tumors (GIST) is a malignant, non-epithelial, mesenchymal tumor of the digestive tract that is not uncommon in clinical practice nowadays; diagnosis being based upon immuno-histo-chemical analysis of the resected or biopsied (FNAC) specimen. Abdominal lump with or without intra-luminal bleed is a common mode of presentation. Early diagnosis and appropriate management with surgery and/or Imatinib therapy improves recurrence free survival and may impact overall survival. We present here our institutional experience of four patients, admitted in Onco-Surgery Dept...
September 2016: Gulf Journal of Oncology
https://www.readbyqxmd.com/read/28153506/clinicopathologic-study-of-calcifying-fibrous-tumor-of-the-gastrointestinal-tract-a-case-series
#4
Maryam Kherad Pezhouh, M Katayoon Rezaei, Maryam Shabihkhani, Arunima Ghosh, Deborah Belchis, Elizabeth A Montgomery, Lysandra Voltaggio
Calcifying fibrous tumor (CFT) is a rare benign mesenchymal lesion known to arise at multiple body sites that may clinically mimic other more aggressive lesions in the gastrointestinal (GI) tract. In this study we describe the clinicopathologic findings of 28 GI tract CFTs. Tumors predominantly arose in middle aged adults with a slight female predominance. The most commonly involved sites were small bowel and colon, followed by stomach and appendix. Tumors ranged from 0.3 to 9.3cm (median 1.4cm) and submucosa was the most commonly involved layer...
January 30, 2017: Human Pathology
https://www.readbyqxmd.com/read/28141549/glomus-tumor-of-the-stomach-a-case-report-and-a-literature-review
#5
Mariusz Chabowski, Adam Paszkowski, Jerzy Skotarczak, Tadeusz Dorobisz, Michał Leśniak, Dawid Janczak, Dariusz Janczak
The study presented a case of a patient with a glomus tumor of the stomach, a mesenchymal neoplasm manifesting with upper gastrointestinal bleeding (Forrest IB). The patient was operated twice. First, he underwent elective laparotomy, during which Billroth I (Rydygier's method) gastric resection was performed. This his was followed by Billroth II resection with Braun's anastomosis. Histopathological examination revealed glomus tumor tissue. Literature data on the glomus tumor of the stomach are presented.
December 1, 2016: Polski Przeglad Chirurgiczny
https://www.readbyqxmd.com/read/28119940/a-bleeding-duodenal-gist-masquerading-as-refractory-peptic-ulcer-disease
#6
Jason D Jones, Stephen Oh, Clancy Clark, Rishi Pawa
Gastrointestinal stromal tumors (GIST) are the most common mesenchymal tumors of the gastrointestinal tract; however, the occurrence of a GIST in the duodenum is rare. Our case demonstrates the importance of considering GIST in the evaluation of refractory duodenal ulcers, as well as the utilization of endoscopic ultrasound in the evaluation of these lesions.
August 2016: ACG Case Reports Journal
https://www.readbyqxmd.com/read/28107095/chibby1-knockdown-promotes-mesenchymal-to-epithelial-transition-like-changes
#7
Victoria Fischer, Michael Wong, Feng-Qian Li, Ken-Ichi Takemaru
Chibby1 (Cby1) was originally isolated as a binding partner for β-catenin, a dual function protein in cell-cell adhesion and in canonical Wnt signaling. The canonical Wnt/β-catenin pathway is dysregulated in various diseases including cancer, most notably of the gastrointestinal origin. To investigate the role of Cby1 in colorectal tumorigenesis, we generated stable Cby1-knockdown (KD) SW480 colon cancer cells. Unexpectedly, we found that Cby1 KD induces mesenchymal-to-epithelial transition (MET)-like changes in SW480 as well as in HEK293 cells...
January 20, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28098915/somatic-mutational-spectrum-analysis-in-a-prospective-series-of-104-gastrointestinal-stromal-tumors
#8
David Guenat, Olivier Deroo, Sandrine Magnin, Loïc Chaigneau, Franck Monnien, Christophe Borg, Christiane Mougin, Jean-François Emile, Jean-Luc Prétet
Gastrointestinal stromal tumors (GISTs) are mesenchymal tumors distinguished by driver mutations in proto-oncogenes KIT or PDGFRA in 85-90% of cases. These mutations have been linked to the response to imatinib, a multikinase inhibitor, and have independent prognostic impact. Here, we describe the prospective study of the molecular characteristics of 104 GISTs from French adult patients analyzed routinely through the National Hospital Program of Molecular Cancer Diagnosis. All patients with GISTs diagnosed at the University Hospital of Besançon between August 2005 and October 2014 were prospectively included in the present study...
January 17, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28078078/radiotherapy-in-the-management-of-gist-state-of-the-art-and-new-potential-scenarios
#9
L Gatto, M Nannini, M Saponara, V Di Scioscio, G Beltramo, G P Frezza, G Ercolani, A D Pinna, A Astolfi, M Urbini, G Brandi, G Biasco, M A Pantaleo
BACKGROUND: Gastrointestinal stromal tumor (GIST) is the most common mesenchymal neoplasm of the gastrointestinal tract. The main treatment for localized gastrointestinal stromal tumors is surgical resection. Unresectable or advanced GIST are poorly responsive to conventional cytotoxic chemotherapy but the introduction of tyrosine kinase inhibitors (TKIs) marked a revolutionary step in the treatment of these patients, radically improving prognosis and clinical benefit. Historically GIST has been considered radiation-resistant, and the role of radiotherapy in the management of patients with GIST is currently restricted to symptomatic palliation in current treatment guidelines...
2017: Clinical Sarcoma Research
https://www.readbyqxmd.com/read/28072751/duodenal-plexiform-fibromyxoma-as-a-cause-of-obscure-upper-gastrointestinal-bleeding-a-case-report
#10
Demetrios Moris, Evangelia Spanou, Stavros Sougioultzis, Nikolaos Dimitrokallis, Polyxeni Kalisperati, Ioanna Delladetsima, Evangelos Felekouras
RATIONALE: We are reporting the first-to our knowledge-case of duodenal Plexiform Fibromyxoma causing obscure upper gastrointestinal bleeding. PATIENT CONCERNS: Plexiform fibromyxoma triggered recurrent upper gastrointestinal bleeding episodes in a 63-year-old man who remained undiagnosed, despite multiple hospitalizations, extensive diagnostic workups and surgical interventions (including gastrectomies), for almost 17 years. DIAGNOSES-INTERVENTIONS: During hospitalization for the last bleeding episode, an upper gastrointestinal endoscopy revealed an intestinal hemorrhagic nodule...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28070658/getting-the-gist-a-pictorial-review-of-the-various-patterns-of-presentation-of-gastrointestinal-stromal-tumors-on-imaging
#11
REVIEW
Dominic Scola, Lawrence Bahoura, Alexander Copelan, Ali Shirkhoda, Farnoosh Sokhandon
Gastrointestinal stromal tumors (GISTs), the most common mesenchymal tumors of the gastrointestinal tract, are a relatively recently described entity. Most exhibit a mutated tyrosine kinase receptor gene and in some capacity are treated by tyrosine kinase inhibitors. GISTs can occur across the age spectrum but are more common in patients older than 40 years. They exhibit a wide range of clinical presentations and imaging characteristics. All patterns of enhancement on contrast enhanced computed tomography (CECT) can be seen with GISTs, including hypoenhancing, isoenhancing, and hyperenhancing tumors...
January 10, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28061498/skull-metastasis-of-gastric-gastrointestinal-stromal-tumor-successfully-managed-by-surgery
#12
Inkeun Park, Dong Hae Chung, Chan Jong Yoo, Dong Bok Shin
Gastrointestinal stromal tumors (GISTs) are rare, but are the most common mesenchymal neoplasm of the gastrointestinal tract. The most common sites of metastasis are liver and peritoneum, while bone metastasis is rare. We report on a patient with skull metastasis after seven years of treatment with imatinib for metastatic GIST. She underwent metastasectomy consisting of craniectomy with excision of the mass, and cranioplasty and continued treatment with imatinib and sunitinib, without evidence of cranial recurrence...
January 1, 2017: Journal of Korean Neurosurgical Society
https://www.readbyqxmd.com/read/28024574/mirna-218-loaded-carboxymethyl-chitosan-tocopherol-nanoparticle-to-suppress-the-proliferation-of-gastrointestinal-stromal-tumor-growth
#13
Lin Tu, Ming Wang, Wen-Yi Zhao, Zi-Zhen Zhang, De-Feng Tang, Ye-Qian Zhang, Hui Cao, Zhi-Gang Zhang
Gastrointestinal stromal tumors (GIST) are one of the most common forms of mesenchymal cancers of the gastrointestinal tract. Although chemotherapeutic drugs inhibited the proliferation of GIST, however, sizable proportion of people developed resistance and therefore difficult to treat. In the present study, O-carboxymethyl chitosan (OCMC)-tocopherol polymer conjugate was synthesized and formulated into stable polymeric nanoparticles. The main aim of present study was to increase the therapeutic efficacy of miR-218 in GIST...
March 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28009602/ewsr1-fusions-with-creb-family-transcription-factors-define-a-novel-myxoid-mesenchymal-tumor-with-predilection-for-intracranial-location
#14
Yu-Chien Kao, Yun-Shao Sung, Lei Zhang, Chun-Liang Chen, Sumathi Vaiyapuri, Marc K Rosenblum, Cristina R Antonescu
Recurrent gene fusions involving EWSR1 with members of the cAMP response element binding protein (CREB) family (ATF1 and CREB1) have been reported in a diverse group of tumors including angiomatoid fibrous histiocytoma (AFH), soft tissue and gastrointestinal clear cell sarcoma, primary pulmonary myxoid sarcoma, and hyalinizing clear cell carcinoma of salivary gland. We have recently encountered a group of 5 myxoid mesenchymal tumors positive for EWSR1 fusions with one of the CREB family member (ATF1, CREB1, and CREM), with histologic features distinct from any of the previously described pathologic entities...
December 22, 2016: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28008275/sunitinib-in-the-treatment-of-gastrointestinal-stromal-tumor-patient-selection-and-perspectives
#15
REVIEW
Nuria Mulet-Margalef, Xavier Garcia-Del-Muro
Gastrointestinal stromal tumor (GIST) is the most common mesenchymal tumor of the gastrointestinal tract. In advanced setting and after progression to imatinib, the multi-targeted receptor tyrosine kinase inhibitor sunitinib has clearly demonstrated a clinical benefit in terms of response rate and progression-free survival with an acceptable toxicity profile. The recommended schedule for sunitinib administration is 50 mg per day 4 weeks ON and 2 weeks OFF; however, potential alternative schedules are also reviewed in the present article...
2016: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28006721/wide-local-excision-for-anal-gist-a-case-report-and-review-of-literature
#16
Mohamed Azzaza, Houssem Ammar, Nihed Abdessayed, Rahul Gupta, Mohamed Said Nakhli, Amine Chhaider, Nafis Abdennaceur, Ali Ben Ali
INTRODUCTION: Gastrointestinal stromal tumors (GIST) are tumors of mesenchymal origin commonly detected in stomach and small bowel. GIST arising primarily from the anal canal is extremely rare. Due to the malignant potential, these tumors are treated with radical surgery like abdominoperineal resection. But with the advent of imatinib therapy and a better understanding of the tumor biology, some cases have been successfully treated with wide local excision. PRESENTATION OF CASE: We describe a case of a 70-year-old lady presenting with a 2cm mass in the anal canal...
December 2, 2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/27997714/genomic-and-transcriptomic-analysis-of-imatinib-resistance-in-gastrointestinal-stromal-tumors
#17
Tsuyoshi Takahashi, Asmaa Elzawahry, Sachiyo Mimaki, Eisaku Furukawa, Rie Nakatsuka, Hiromi Nakamura, Takahiko Nishigaki, Satoshi Serada, Tetsuji Naka, Seiichi Hirota, Tatsuhiro Shibata, Katsuya Tsuchihara, Toshirou Nishida, Mamoru Kato
Gastrointestinal stromal tumors represent the most common mesenchymal tumor of the digestive tract, driven by gain-of-function mutations in KIT. Despite its proven benefits, half of the patients treated with imatinib show disease progression within 2 years due to secondary resistance mutations in KIT. It remains unclear how the genomic and transcriptomic features change during the acquisition of imatinib resistance. Here, we performed exome sequencing and microarray transcription analysis for four imatinib-resistant cell lines and one cell line briefly exposed to imatinib...
December 20, 2016: Genes, Chromosomes & Cancer
https://www.readbyqxmd.com/read/27994335/perforated-gastrointestinal-stromal-tumor-of-the-meckel-s-diverticulum-a-case-report-and-review-of-literature
#18
Ishwar R Hosamani, Srinivas Kodaganur, S M Chaukimath
Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal tumors of the GI tract, they have a wide spectrum of clinical manifestations, and a small proportion of them present as an acute abdomen due to obstruction, perforation, or hemoperitoneum. We present a case of a perforated GIST of the Meckel's diverticulum and review the current literature on perforated GISTs. We ran a search on Pubmed and Google Scholar with the following terms "perforated GIST," "perforated Meckel's diverticulum," "GIST with peritonitis," and "GIST in Meckel's diverticulum...
October 2016: Indian Journal of Surgery
https://www.readbyqxmd.com/read/27984276/mechanisms-of-liver-induced-tolerance
#19
Demetrios Moris, Lina Lu, Shiguang Qian
PURPOSE OF REVIEW: To highlight the results of the ongoing research on the mechanisms of liver-induced tolerance focusing on results from the last year. RECENT FINDINGS: The liver is exposed to a massive antigenic burden of dietary and commensal products from the gastrointestinal tract via portal vein, most of which are necessary for survival. To prevent the immune system from destroying these foreign yet beneficial elements, the liver has developed unique mechanisms to suppress immune responses...
February 2017: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/27943096/gastrointestinal-stromal-tumors-gists-seap-seom-consensus-on-pathologic-and-molecular-diagnosis
#20
J Martin-Broto, V Martinez-Marín, C Serrano, N Hindi, J A López-Guerrero, R Ramos-Asensio, A Vallejo-Benítez, D Marcilla-Plaza, R González-Cámpora
Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal neoplasms of the digestive tract, with an incidence of 1.1 cases/100,000 inhabitants/year. A group of experts from the Spanish Society of Pathology and the Spanish Society of Oncology met to discuss a brief update on GISTs and agree on aspects relating to the pathological and molecular diagnosis of these tumors. GISTs are generally solitary, well-circumscribed lesions of variable size (<10 mm-35 cm) that may present with intra- or extra-luminal parietal growth or a mixed-type (hourglass) growth pattern...
December 9, 2016: Clinical & Translational Oncology
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