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- W1594348513 abstract "The subepithelial lesions of the gastrointestinal tract are related to mesenchymal tumors and 80% of them are GIST (gastrointestinal stromal tumors). However, there are also other tumors, such as: leiomyomas, schwannomas, lipomas, glomus tumors, carcinoid tumors, aberrant pancreas and polyps or inflammatory tumors. Diagnosis of submucosal tumors is often performed during routine endoscopic examination, they are frequently located at the stomach and in most cases are clinically evidenced by their complications. Endoscopic ultrasonography (EUS) is the elected method for their staging; but other imaging diagnosis methods include computed tomography (CT), magnetic resonance imaging (MRI) and positron emission tomography scan (PET). The differential diagnosis is made by inmunohistochemical techniques, revealing in the GIST the expression of the antigen CD117, and prognostic factors are determined by size and mitotic index. Surgery is the recommended therapeutic, although in small lesions not exceeding 2 cm it has also been suggested the endoscopic resection guided by EUS and a watchful behaviour based on periodical controls in lesions with benignity criteria. The series here exhibited (2 GIST 1 lyposarcoma, 1 schwannoma and 1 inflammatory fibroid polyp) shows that all these tumors were symptomatic; have been diagnosed using endoscopy and recognized by means of histopathology and immunohistochemical analysis after surgery." @default.
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- W1594348513 date "2009-06-01" @default.
- W1594348513 modified "2023-09-23" @default.
- W1594348513 title "[Subepithelial tumors of the gastrointestinal tract]." @default.
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