Gastric calcifying fibrous tumor removed by endoscopic submucosal dissection

Figure 1 Endoscopic ultrasonography findings of visualized submucosal tumor. A: Endoscopy shows 10-mm shows submucosal tumor (SMT) in lesser curvature of lower corpus of stomach; B: Narrow-band endoscopic imaging SMT covered by normal gastric mucosa; C: Endoscopic submucosal dissection (ESD) for SMT; D: Stomach ulceration five days after ESD; E: Endoscopic ultrasonography (EUS) findings show internally isoechoic, homogeneous sub-mucosal tumor mainly localized within second and third layers, whereas first and fourth layers are preserved; F: Acoustic shadowing of hyperechoic foci inside lesion is consistent with calcifications. Fourth layer is obvious.

Figure 2 Pathological findings of resected small mucosal tumor. A: Complete submucosal tumor resection was confirmed; B: Hypocellular, spindle-cell tumor has densely hyalinized, collagenous matrix, scattered lymphoplasmacytic aggregates, some psammomatous foci and dystrophic calcification, Spindle-cells harbor no mitotic activity or atypia; C: Positive immunohistochemical staining for vimentin. Original magnification × 10 (A), × 200 (B), × 100 (C).