From: Anastomotic leakage following resection of the esophagus—introduction of an endoscopic grading system
Grade
Dehiscence of anastomosis
Cavity
Tubular stomach
1a
< ¼ of the circumference
No
Rosy
1b
Yes
2
> ¼ of the circumference
3
Yes/no
Necrotic mucosa
4
Necrotic wall