1. Volume 114, Issue 3, Pages 448-455 (March 1998)
Photodynamic ablation of high-grade dysplasia and early cancer in Barrett's esophagus by means of 5-aminolevulinic acid 
Liebwin Gossner*, Manfred Stolte‡, Ronald Sroka§, Kai Rick§, Andrea May*, Eckhard Gerhard Hahn∥, Christian Ell* 
Gastroenterology 
Volume 114, Issue 3, Pages (March 1998)
DOI: /S (98)70527-X
Copyright © 1998 American Gastroenterological Association Terms and Conditions

2. Fig. 1
Superficial adenocarcinoma (arrow) in a patient with Barrett's esophagus before PDT.
Gastroenterology  , DOI: ( /S (98)70527-X)
Copyright © 1998 American Gastroenterological Association Terms and Conditions

3. Fig. 2
Former tumor site covered by squamous epithelium (arrow); biopsy was negative for cancer.
Gastroenterology  , DOI: ( /S (98)70527-X)
Copyright © 1998 American Gastroenterological Association Terms and Conditions

4. Fig. 3
Comparison of the PpIX skin kinetics (a.u., arbitrary units), PpIX (right axis), and 5-ALA (left axis) plasma kinetics after oral application.
Gastroenterology  , DOI: ( /S (98)70527-X)
Copyright © 1998 American Gastroenterological Association Terms and Conditions