PMC5735579_01
Endoscopic view of an elevated yellow submucosal lesion in esophagus (a). Endosonographic image showed a nonhomogeneous hyperechoic submucosal lesion with a diameter of 12 mm and without extension to muscularis layer (b).
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Endoscopy identified a firm submucosal yellow lesion, measuring approximately 10 mm and located 30 cm distal from the incisor teeth (Figure 1). It was a nonhomogeneous hyperechoic solid lesion with clear border with no extension to muscularis layer and without mediastinal adenopathies (Figure 1).
Endoscopic view of the esophagus after endoscopic treatment of tumor (a). Gross appearance of the tumor after endoscopic treatment (b).
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After creation of the submucosal fluid bulging, the resection of lesion was performed using a monofilament rotatable polypectomy snare (Boston; 20 mm; output setting: cut 40 watts; coagulation 40 watts) without any complication (Figure 2). The size of specimen was 12 x 5 mm with yellow color (Figure 2).
Section of the esophageal wall (a) showed nests of medium-sized cells with abundant eosinophilic granular cytoplasm (H&E x100). High power view of the tumor in the esophageal wall (b) showed the above-mentioned cells with bland looking nuclei without any atypia or pleomorphism (H&E x400).
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Histological analysis of specimen revealed nests of medium-sized cells with abundant eosinophilic granular cytoplasm with bland looking nuclei without any atypia or pleomorphism (Figure 3).