PMC5985262_01
Upper gastrointestinal endoscopy revealing a submucosal tumor located in the lesser curvature of the upper body of the stomach (A). Endoscopic ultrasonography revealing an intraluminal hypoechoic tumor located in the third or fourth layer of the stomach wall (B).
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An upper gastrointestinal endoscopy revealed a submucosal tumor (SMT) with no delle, located in the lesser curvature of the upper body of the stomach (Fig. 1A). Endoscopic ultrasonography revealed an intraluminal hypoechoic tumor in the third or fourth layer of the stomach wall (Fig. 1B).
Contrast-enhanced computed tomography showing a 20-mm, well-enhanced, intraluminal-type tumor located in the lesser curvature of the upper body of the stomach (arrow).
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Contrast-enhanced computed tomography (CECT) of the abdomen showed a 20-mm, well-enhanced, intraluminal-type tumor located in the lesser curvature of the upper body of the stomach and no swollen lymph nodes (Fig. 2).
Gross appearance of the resected tumor. A 20 x 20 mm submucosal mass that was well circumscribed was observed (A). Histopathology revealing a well-circumscribed tumor localized in the submucosal layer (B).
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The gross appearance of the resected tumor showed a 20 x 20-mm submucosal mass that was well circumscribed (Fig. 3A). Histopathology confirmed a well-circumscribed tumor localized in the submucosal layer (Fig. 3B).
The tumor was composed of accumulated round and spindle cells surrounding the capillary blood vessels (A). Immunohistochemistry revealed the expression of smooth muscle actin (B) and vimentin (C).
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The tumor was composed of accumulated round and spindle cells, which surrounded the capillary blood vessels (Fig. 4A). Immunohistochemistry revealed the expression of smooth muscle actin (Fig. 4B) and vimentin (Fig. 4C), but not of keratin, S-100 protein, C-kit, or CD34.