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Differential diagnosis of submucosal gastric tumors: gastric schwannomas misdiagnosed as GISTs.
J Surg Case Rep
December 2024
Department of Pathology, İzmir University of Economics, Fevzi Çakmak, Sakarya Cd. No. 156, 35330 Balçova/İzmir, Türkiye.
Schwannomas commonly occur in the head and neck region but are rarely seen in the gastrointestinal tract; the stomach and small intestine are the most commonly involved sites. These tumors are usually misdiagnosed as gastrointestinal stromal tumors (GISTs) before histopathological confirmation due to radiological similarity. GI schwannomas show positivity for S100 protein and vimentin but are negative for CD 117 and CD 34, which helps in differentiating the tumor from GISTs.
View Article and Find Full Text PDFGastric Schwannoma: A Rare Cause of Gastric Bleeding.
J Med Cases
December 2024
Department of Surgery, Hospital Distrital da Figueira da Foz, Rua do Hospital 3094-001, Figueira da Foz, Portugal.
Gastric schwannomas and gastrointestinal stromal tumors (GISTs) are two types of mesenchymal tumors, which represent a group of rare tumors of the gastrointestinal tract. The differential diagnosis between these two tumors is difficult given their very similar appearance and clinical features. The authors present a case of a 63-year-old man with melena and epigastric pain.
View Article and Find Full Text PDFGastric schwannoma: A case report.
Asian J Surg
November 2024
Department of Cardiovascular Surgery, Binzhou Medical University Hospital, Binzhou, Shandong province, 256600, China.
Mesocolic schwannoma mimicking gastrointestinal stromal tumor: A case report and review of literature.
Medicine (Baltimore)
November 2024
Gastrointestinal Surgery Medical Center, Weifang People's Hospital, Shandong Second Medical University, Weifang, Shandong, China.
Rationale: Schwannomas are common peripheral nerve tumors originating from Schwann cells, primarily occurring in the head and neck, limbs, and trunk. Schwannomas occurring in the mesocolon are rare and often have no specific manifestations. Abdominal schwannomas need to be differentiated from common abdominal tumors such as gastrointestinal stromal tumors.
View Article and Find Full Text PDFEndoscopic "calabash" ligation and resection for small gastric mesenchymal tumors.
World J Gastrointest Endosc
October 2024
Department of Gastroenterology, Shenzhen People's Hospital, The Second Clinical Medical College, Jinan University, Shenzhen 518000, Guangdong Province, China.
Background: Gastric mesenchymal tumors (GMT) are identified as soft tissue neoplasms that arise from mesenchymal stem cells within the gastrointestinal tract. GMT primarily encompass gastric stromal tumors (GST), gastric leiomyomas, and gastric schwannomas. Although most GMT are benign, there are still potential malignant changes, especially GST.
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