Endoscopic ultrasound fine needle aspiration: Technique and applications in clinical practice

Figure 2 Subepithelial lesions. A: Endoscopic ultrasound-fine needle tissue acquisition of a subepithelial lesion using a 19 gauge needle; B, C: Histological examination showed large fragments of neoplastic tissue with solid structure, composed of regular, fused cells with mild atypia, which were intensively immunoreactivity for c-Kit, consistent with gastrointestinal stromal tumor.