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Gastrointestinal mesenchymal neoplasm

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https://www.readbyqxmd.com/read/28621294/endoscopic-ultrasound-with-tissue-sampling-is-accurate-in-the-diagnosis-and-subclassification-of-gastrointestinal-spindle-cell-neoplasms
#1
Dalbir Singh Sandhu, Adrian N Holm, Rami El-Abiad, Carolyn Rysgaard, Chris Jensen, Henning Gerke
BACKGROUND AND OBJECTIVES: Mesenchymal (spindle cell) neoplasms (SCN) of the gastrointestinal (GI) tract are an important subtype of subepithelial lesions that need subclassification to assess their malignant potential. Reported success rates of accurate subclassification with endoscopic ultrasound (EUS)-guided biopsies are variable. Our goal was to analyze our experience using EUS-guided TruCut biopsy (EUS-TCB) in the majority of patients. METHODS: Retrospective analysis in patients who underwent EUS with biopsies for suspected SCN at our tertiary referral center between 2004 and 2013...
May 2017: Endoscopic Ultrasound
https://www.readbyqxmd.com/read/28598731/neoplasms-of-the-appendix-pictorial-review-with-clinical-and-pathologic-correlation
#2
Laura M Leonards, Anokh Pahwa, Maitraya K Patel, Jeffrey Petersen, Michael J Nguyen, Cecilia M Jude
Appendiceal neoplasms are uncommon tumors of the gastrointestinal tract that may manifest with symptoms of appendicitis, right lower quadrant pain, or palpable mass, leading to imaging or surgical intervention. The majority of appendiceal masses consist of primary epithelial neoplasms and neuroendocrine tumors (NETs). Epithelial neoplasms-mucinous and nonmucinous types-are more often detected at imaging than NETs due to their larger size and propensity for peritoneal spread and metastatic disease. Epithelial mucinous neoplasms are defined by the presence of mucin, detected at radiologic and pathologic examination...
June 9, 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28528977/imatinib-induces-autophagy-via-upregulating-xiap-in-gist882%C3%A2-cells
#3
Qingqing Xie, Qi Lin, Dezhi Li, Jianming Chen
Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal neoplasms originating from the gastrointestinal tract with gain of function mutations in receptor tyrosine kinases KIT or platelet-derived growth factor receptor A (PDGFRA). The main effective treatment for GISTs is tyrosine kinase inhibitors, such as imatinib mesylate. However, GISTs respond to imatinib treatment eventually develop acquired resistance, which is a main obstacle for GISTs therapy. Therefore, it's urgent to have a better understanding of the mechanisms underlying the imatinib resistance in GISTs to develop novel therapeutic strategies...
May 18, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28458940/primary-small-bowel-gist-presenting-as-a-life-threatening-emergency-a-report-of-two-cases
#4
Safi Khuri, Hayim Gilshtein, Abd-Alkarim Darawshy, Hany Bahouth, Yoram Kluger
Gastrointestinal stromal tumor (GIST) is a rare stromal neoplasm, which represents the most common mesenchymal tumor of the gastrointestinal tract. It is characterized by indolent clinical symptoms, although it can present as a life-threatening emergency. Herein, we present two cases of primary small bowel GIST treated at our department. A 68-year-old female patient presented to our emergency department with a diffuse abdominal pain of acute onset. Imaging studies revealed a mass at proximal jejunum, with a nearby free air and fluid...
2017: Case Reports in Surgery
https://www.readbyqxmd.com/read/28440971/prognostic-factors-for-large-symptomatic-gists-a-pragmatic-study-of-experiences-from-a-university-hospital-over-10-years
#5
Supatcha Prasertcharoensuk, Punnapud Thanapongpornthana, Vajarabhongsa Bhudhisawasdi, Ake Pugkhem, Kriangsak Jenwitheesuk, Aumkhae Sookprasert, Chawalit Pairojkul
Background: Gastrointestinal stromal tumors (GISTs), which are mesenchymal neoplasms in the gastrointestinal (GI) tract account for 0.2% of all GI tumors. Several factors have been reported (mostly from studies conducted in Western countries) to be associated with survival in GISTs cases such as tumor site, staging, and tumor size. We conducted a pragmatic study, looking at a 10-year period, aimed at understanding the prognostic factors related to GISTs in a university hospital. The study population consisted of patients with large symptomatic GISTs...
March 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28418346/extra-gastrointestinal-stromal-tumor-of-prostate
#6
Demet Etit, Haldun Kar, Neşe Ekinci, Ahmet Emre Yenipazar, Fulya Çakalağaoğlu
BACKGROUND: Extra-gastrointestinal stromal tumor is defined as a mesenchymal neoplasm arising from soft tissues outside the gastrointestinal tract. Prostatic extra-gastrointestinal stromal tumor has rarely been noted. CASE REPORT: A 56 year-old man presented with pain in the anal region. A digital rectal examination revealed that the prostate was markedly enlarged with a smooth, bulging surface. Computerized tomography images showed a 6 cm heterogeneous, infiltrative tumor within the prostate gland extending to the trigon of the bladder, left seminal vesicle and rectum...
April 5, 2017: Balkan Medical Journal
https://www.readbyqxmd.com/read/28416775/volatile-organic-compounds-in-gastrointestinal-stromal-tumour-tissue-originating-from-patient-derived-xenografts
#7
Renata Wawrzyniak, Agnieszka Woźniak, Yemarshet Gebreyohannes, Bartosz Dykcik, Patrick Schöffski, Michal Markuszewski
Gastrointestinal stromal tumours (GIST) are the most common mesenchymal neoplasms of the gastrointestinal tract, localized mainly in the stomach or small intestine. The metabolomic signature of GIST signature associated with various mutations in KIT gene remains undiscovered and unexplored. The main aim of this pilot study was to determine and compare metabolomic profiles in GIST xenograft models with different genetic background. Metabolomic profiling using gas chromatography coupled with mass spectrometry followed by both univariate and multivariate statistical analyses was applied to select metabolites which differentiate the GIST models studied...
April 18, 2017: Journal of Breath Research
https://www.readbyqxmd.com/read/28362703/an-epithelioid-gastrointestinal-stromal-tumor-of-the-stomach-with-strong-expression-of-keratin-clinicopathologic-correlation-and-follow-up-post-imatinib-therapy
#8
Nick Baniak, Lawrence Lee, Chen Zhou, Sean Young, Darryl Yu
Gastrointestinal stromal tumors (GIST) are the most common mesenchymal neoplasms of the digestive tract. They are relatively rare neoplasms compared with gastrointestinal carcinomas and usually can readily be differentiated from carcinomas based on the morphology of the neoplastic cells that are typically spindled (70%), pure epithelioid, or mixed type. GISTs in general lack expression of cytokeratin and exhibit immunoreactivity toward CD117, CD34, or DOG1. GISTs can demonstrate a pure epithelioid morphology that can appear similar histologically to a carcinoma...
March 30, 2017: Applied Immunohistochemistry & Molecular Morphology: AIMM
https://www.readbyqxmd.com/read/28356974/gastrointestinal-stromal-tumor-with-a-pdgfra-mutation-masquerading-as-gastric-plexiform-fibromyxoma-a-comparative-clinicopathological-study-of-two-cases
#9
Jun Zhou, Jingjing Xu, Guozhong Jiang, Yihui Ma, Jingwen Qi, Wencai Li, Dandan Zhang
Gastric plexiform fibromyxoma (PF) is a rare mesenchymal tumor with a histologically distinctive multinodular pattern, dissimilar to conventional gastrointestinal stromal tumor (GIST). The current study presents one case of gastric PF, and one case of GIST with a platelet-derived growth factor receptor α (PDGFRA) mutation mimicking PF, and discusses their differential diagnoses. The two patients were a 51-year-old male with PF and a 47-year-old female with GIST, each of whom presented with an occupying lesion in the gastric antrum...
February 2017: Oncology Letters
https://www.readbyqxmd.com/read/28344749/heavily-calcified-gastrointestinal-stromal-tumors-pathophysiology-and-implications-of-a-rare-clinicopathologic-entity
#10
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/28325196/management-of-gastrointestinal-stromal-tumors
#11
REVIEW
Emily Z Keung, Chandrajit P Raut
Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal neoplasm of the gastrointestinal tract. The stomach is the most common site of origin. Management of GISTs changed after the introduction of molecularly targeted therapies. Although the only potentially curative treatment of resectable primary GISTs is surgery, recurrence is common. Patients with primary GISTs at intermediate or high risk of recurrence should receive imatinib postoperatively. Imatinib is also first-line therapy for advanced disease...
April 2017: Surgical Clinics of North America
https://www.readbyqxmd.com/read/28288693/uterine-epithelioid-leiomyosarcoma-with-c-kit-expression-and-ywhae-gene-rearrangement-a-case-report-of-a-diagnostic-pitfall-of-uterine-sarcoma
#12
Terufumi Kubo, Shintaro Sugita, Ryuichi Wada, Noriaki Kikuchi, Masahiro Iwasaki, Yumika Ito, Taro Sugawara, Hiromi Fujita, Makoto Emori, Ryoichi Tanaka, Hiroshi Hirano, Tsuyoshi Saito, Tadashi Hasegawa
BACKGROUND: Uterine sarcoma is a rare tumor that is often difficult to classify based on morphological and immunohistochemical analysis alone. Limited access to molecular biological analysis in routine practice would hinder making a definitive diagnosis. CASE PRESENTATION: In this report, we describe a case of a mesenchymal tumor arising from the uterine cervix in a 52-year-old woman. From microscopic morphology of the resected specimen, epithelioid leiomyosarcoma, high-grade endometrial stromal sarcoma, or uterine gastrointestinal stromal tumor (GIST) were considered as differential diagnoses...
March 14, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/28259173/subepithelial-rectal-gastrointestinal-stromal-tumor-the-use-of-endoscopic-ultrasound-guided-fine-needle-aspiration-to-establish-a-definitive-cytological-diagnosis-a-case-report
#13
Vitor Ottoboni Brunaldi, Martin Coronel, Danielle Azevedo Chacon, Eduardo Turiani Hourneaux De Moura, Sérgio E Matuguma, Eduardo Guimarães Hourneaux De Moura, Diogo Turiani Hourneaux De Moura
BACKGROUND: Gastrointestinal stromal tumors are the most common mesenchymal neoplasms affecting the gastrointestinal tract. The stomach is the most common location to be affected, and the rectum one of the rarest, but the whole gastrointestinal tract remains susceptible. Gastrointestinal stromal tumors account for only 0.1% of rectal tumors. Currently, endoscopic ultrasound plays an essential role in the diagnostic process of gastrointestinal stromal tumors, especially when the affected sites have a worse outcome and higher morbidity rates...
March 5, 2017: Journal of Medical Case Reports
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
#14
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: Gastrointestinal stromal tumors (GIST) represent the most common mesenchymal neoplasms of the gastrointestinal tract. Surgery is the only curative treatment for GIST. The aim of our review was 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...
June 2017: Minerva Chirurgica
https://www.readbyqxmd.com/read/28141549/glomus-tumor-of-the-stomach-a-case-report-and-a-literature-review
#15
REVIEW
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/28078078/radiotherapy-in-the-management-of-gist-state-of-the-art-and-new-potential-scenarios
#16
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/28061498/skull-metastasis-of-gastric-gastrointestinal-stromal-tumor-successfully-managed-by-surgery
#17
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/28009602/ewsr1-fusions-with-creb-family-transcription-factors-define-a-novel-myxoid-mesenchymal-tumor-with-predilection-for-intracranial-location
#18
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...
April 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/27943096/gastrointestinal-stromal-tumors-gists-seap-seom-consensus-on-pathologic-and-molecular-diagnosis
#19
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...
May 2017: Clinical & Translational Oncology
https://www.readbyqxmd.com/read/27900093/primary-gastrointestinal-stromal-tumour-of-the-ileum-pre-operatively-diagnosed-as-an-abdominal-abscess
#20
Patrizia Rubini, Francesco Tartamella
The present case report described the acute presentation, diagnosis and management of a primary gastrointestinal stromal tumour (GIST) of the ileum. A male patient (age, 51 years) was admitted to Maggiore Hospital (Parma, Italy) due to presenting with fever, dysuria and lower abdominal pain. Ultrasonography and computed tomography showed a 7,5×5,5-cm pelvic mass containing air and purulent fluid indicative of an intraperitoneal abscess. The patient was subjected to diagnostic laparoscopy, which revealed a huge, soft cystic mass arising from the small bowel...
November 2016: Molecular and Clinical Oncology
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