Table 3.

Histological healing score

Criteria	Score points (maximum = 29)
Blood vessel ingrowth	0 = no evidence 1 = occasional evidence 2 = light scattering 3 = abundant evidence 4 = confluent cells or fibers
Fibroblasts	0 = no evidence 1 = occasional evidence 2 = light scattering 3 = abundant evidence 4 = confluent cells or fibers
Collagen formation	0 = no evidence 1 = occasional evidence 2 = light scattering 3 = abundant evidence 4 = confluent cells or fibers
Inflammatory cells	0 = confluent cells or fibers 1 = abundant evidence 2 = light scattering 3 = occasional evidence 4 = no evidence
First layer in which continuity has been restored (counted from the mucosa outwards towards serosa)	0 = no layer restored 1 = serosa 2 = muscularis 3 = submucosa 4 = mucosa
Number of healed layers	0 – 4 (none, mucosa, submucosa, serosa)
Epithelium closed	0 = no 1 = yes
Crypt architecture restored	0 = no 1 = yes
Overall healing quality	1 = bad 2 = normal 3 = good