1. Retroperitoneal emphysema complicating through-the-scope pyloric dilation 
Louis W.C. Chow, FRCS, Chong L. Ong, FRCS 
Gastrointestinal Endoscopy 
Volume 40, Issue 1, Pages (January 1994)
DOI: /S (94)
Copyright © 1994 American Society for Gastrointestinal Endoscopy Terms and Conditions

2. Fig. 1
Barium meal showing the pyloric stricture and contrast enhancement of the common bile duct.
Gastrointestinal Endoscopy  , DOI: ( /S (94) )
Copyright © 1994 American Society for Gastrointestinal Endoscopy Terms and Conditions

3. Fig. 2
Retroperitoneal emphysema (arrows) outlining the right kidney and psoas muscle in a plain abdominal x-ray film.
Gastrointestinal Endoscopy  , DOI: ( /S (94) )
Copyright © 1994 American Society for Gastrointestinal Endoscopy Terms and Conditions