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Clinical course of gastrointestinal stromal tumor diagnosed by endoscopic ultrasound‐guided fine‐needle aspiration

Gastrointestinal stromal tumors (GIST) are the most common mesenchymal tumor of the gastrointestinal tract. However, little is known about the clinical presentation of GIST, especially small lesions. The purpose of the present study was to clarify the efficacy of endoscopic ultrasound‐guided fine‐needle aspiration (EUS‐FNA) for the diagnosis of GIST and to determine its clinical course.