Localized primary gastric amyloidosis: Three case reports

Figure 3 Endoscopic and histological data of patient 3. A: Conventional endoscopy demonstrated that the whole gastric mucosa was congestive, edematous and mainly red. B: Endoscopic ultrasound showed that the mucosa and submucosa layer were thickened (white arrow) but that the muscle and serosal layers were intact. C: A gastric tube was placed into the antrum to provide nutritional support. D: Hematoxylin-eosin staining revealed an abundant brick-red substance in the mucosal and submucosal layers. E: These tissues were positive for Congo red staining. Orange arrows indicate amyloid depositions.