PMC2796228_01
Endoscopic appearance of the pedunculated gastric hyperplastic polyp (7 mm in size) arising from the greater curvature of the antrum. (a) The polyp had whitish yellow granules. (b) Magnification narrow-band imaging endoscopy revealed long microcapillaries in the polyp but did not reveal disappearance of the mucosal microstructure or irregular branched capillaries (x50).
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fig1
There was a pedunculated polyp with whitish yellow granules, 7 mm in diameter, arising from the greater curvature of the antrum (Figure 1(a)). Magnification narrow-band imaging endoscopy (GIF-H260Z, Olympus) revealed long microcapillaries in the polyp but did not reveal disappearance of the mucosal microstructure or irregular branched capillaries (Figure 1(b)).
(a) The resected specimen obtained by endscopic mucosal resection showed lengthened gastric foveolae in the superficial portion in the polyp (HE stain, x4). (b) Collections of large foamy histiocytes were seen in the lamina propria (HE stain, x25). (c) The histiocytes represented a positive immunochemical reaction for CD68 (x25).
GRP2009-845260.002.jpg
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fig2
Histological examination of the EMR specimen revealed lengthened gastric foveolae in the superficial portion (Figure 2(a)). Tight sheet of foamy histiocytes was seen in the superficial lamina propria (Figure 2(b)). Immunohistological studies were carried out for the resected specimen and the histiocytes represented a positive immunochemical reaction for CD68 (Figure 2(c)).