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Fig. 1 | BMC Gastroenterology

Fig. 1

From: Multiple non-polypoid mucosal Schwann cell hamartomas presenting as edematous and submucosal tumor-like lesions: a case report

Fig. 1

a A subepithelial lesion was observed on initial colonoscopy but subsequently disappeared. b Mucosal Schwann cell hamartomas presenting as numerous edematous elevations and submucosal tumor-like projections were observed throughout the sigmoid colon. c Indigo carmine clearly delineates a submucosal tumor-like projection. d Narrow-band imaging (NBI) of a Schwann cell hamartoma with fine white granular opacities on its surface (yellow arrows). e Magnifying narrow-band imaging revealed elongated crypt openings, increased width of intervening parts, and no visible microvessels. f Endoscopic ultrasound revealed mild, uniformly hypoechoic thickening limited to the first layer (yellow circle)

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