1. Endoscopic appearance of amyloidosis with gastrointestinal tract involvement after biopsy 
Gastrointestinal Endoscopy 
Volume 46, Issue 3, Pages (September 1997)
DOI: /S (97)
Copyright © 1998 American Society for Gastrointestinal Endoscopy Terms and Conditions

2. Fig. 1
A, Duodenal mucosa before biopsy. B, Duodenal mucosa after obtaining a biopsy specimen. A fish mouth wound developed soon after the specimen was taken.
Gastrointestinal Endoscopy  , DOI: ( /S (97) )
Copyright © 1998 American Society for Gastrointestinal Endoscopy Terms and Conditions

3. Fig. 2
The change in rectal mucosa after biopsy specimen was taken. The typical fish mouth wound again developed.
Gastrointestinal Endoscopy  , DOI: ( /S (97) )
Copyright © 1998 American Society for Gastrointestinal Endoscopy Terms and Conditions

4. Fig. 3
Photomicrographs of the duodenal biopsy. A, Marked hyaline thickening of the media of vessels located in the submucosa. (H&E, original magnification ×100.) The vessel lumen is almost completely obliterated. B, Apple-green birefringence under polarized light. (Congo red stain, original magnification ×100.)
Gastrointestinal Endoscopy  , DOI: ( /S (97) )
Copyright © 1998 American Society for Gastrointestinal Endoscopy Terms and Conditions