1. The target sign: a new weapon for early diagnosis of colonic perforation during EMR 
Sergey V. Kantsevoy, MD, PhD 
Gastrointestinal Endoscopy 
Volume 73, Issue 1, Pages (January 2011)
DOI: /j.gie
Copyright © 2011 American Society for Gastrointestinal Endoscopy Terms and Conditions

2. Figure 1
Inadvertently resected muscularis propria creating the target sign compared with uncolored submucosal layer on the EMR specimen.
Gastrointestinal Endoscopy  , 86-88DOI: ( /j.gie )
Copyright © 2011 American Society for Gastrointestinal Endoscopy Terms and Conditions

3. Figure 2
No visible subdiaphragmatic air on the abdominal radiograph after EMR of a large cecal polyp.
Gastrointestinal Endoscopy  , 86-88DOI: ( /j.gie )
Copyright © 2011 American Society for Gastrointestinal Endoscopy Terms and Conditions

4. Figure 3
Abdominal radiograph of the same patient as in Figure 2 demonstrating a large amount of subdiaphragmatic air 16 hours after EMR.
Gastrointestinal Endoscopy  , 86-88DOI: ( /j.gie )
Copyright © 2011 American Society for Gastrointestinal Endoscopy Terms and Conditions