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Primary Visceral Ewing Sarcoma (Gastric and Bladder) with KIT Expression: A Report of Two Patients and a Differential Diagnostic Approach.
Int J Surg Pathol
January 2025
Pathology Department, University of Valencia, Valencia, Spain.
Extra-skeletal Ewing sarcoma is a rare tumor, most commonly occurring in the paravertebral region, extremities, retroperitoneum, and very rarely in visceral locations. We present two primary visceral Ewing sarcomas confirmed at the molecular level: one located in the stomach and the other in the bladder. Both tumors demonstrated strong and diffuse membranous CD99 expression, accompanied by variable KIT immunoreactivity.
View Article and Find Full Text PDF18F-Fluorodeoxyglucose Uptake in PDGFRA-Mutant Gastrointestinal Stromal Tumors.
JAMA Netw Open
January 2025
Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy.
Importance: The D842V platelet-derived growth factor receptor α (PDGFRA) mutation identifies a molecular subgroup of gastrointestinal stromal tumors (GISTs), primarily resistant to standard tyrosine kinase inhibitors and with an overall more indolent behavior. Although functional imaging with 18F-fluorodeoxyglucose-labeled positron emission tomography ([18F]FDG-PET) plays a proven role in GISTs, especially in early assessment of tumor response, less is known about [18F]FDG uptake according to the GIST molecular subtypes.
Objective: To evaluate the degree of [18F]FDG uptake in PDGFRA-mutant GISTs and better define the role of functional imaging in this rare and peculiar subset of GISTs.
Huaier inhibits the proliferation and migration of gastrointestinal stromal tumors by regulating the JAK2 / STAT3 signaling pathway.
J Ethnopharmacol
January 2025
Division of Gastric Surgery, Department of General Surgery, Nanjing Drum Tower Hospital, Drum Tower Clinical Medical College, Nanjing University of Chinese Medicine, Nanjing, China; Division of Gastric Surgery, Department of General Surgery, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China. Electronic address:
Ethnopharmacological Relevance: Gastrointestinal stromal tumor (GIST) is the most common mesenchymal tumor of the digestive tract, often accompanied by a high risk of recurrence and drug resistance. Huaier (Trametes robiniophila Murr), a traditional Chinese medicinal fungus, has demonstrated potent anticancer properties and is widely used as an adjuvant treatment for liver, breast, gastric, colon, and non-small cell lung cancers. However, its effects and molecular mechanisms in GIST remain unclear.
View Article and Find Full Text PDF[Management of gastric GIST removed through submucosal tunneling endoscopic resection and 5 year follow-up. Case report].
Rev Gastroenterol Peru
January 2025
Hospital Nacional Dos de Mayo, Lima, Perú.
We report the case of a 68-year-old female patient who had a gastrointestinal stromal tumor involving muscularis propria of the gastric body that was removed through submucosal tunneling endoscopic resection, with favorable follow-up after 5 years, with no signs of recurrence.
View Article and Find Full Text PDFInvestigation of unfavorable prognostic factors for survival in Chinese patients with gastric gastrointestinal stromal tumors.
Transl Cancer Res
December 2024
Key Laboratory of Tropical Translational Medicine of Ministry of Education, the First Affiliated Hospital, Hainan Medical University, Haikou, China.
Background: Gastrointestinal stromal tumor (GIST) was very rare in the gastrointestinal (GI) tract. Most GISTs were asymptomatic at early stage. Therefore, it was of great significance to explore the prognostic factors of patients with GIST.
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