| http://www.w3.org/ns/prov#value | - The clinical manifestations, diagnosis and management of gastric gastrointestinal stromal tumors (GISTs), leiomyomas, lipomas, and other subepithelial lesions that may have a polypoid appearance on upper endoscopy are discussed in detail, separately. (See Endoscopic ultrasound for the characterization of subepithelial lesions of the upper gastrointestinal tract and Epidemiology, classification,
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