| Type | Aspect | Colon/small Bowel length | Atresia | Membrane |
| Type 1 | Good | Sufficient | Absent |
|
| Type 2 | Poorly vascularised | Sufficient | Absent | Inflamed |
| Type 3 | Poorly vascularised | Reduced | Present: colon with or without small bowel |
|
| Type 4 |
| Quasi-total necrosis of the colon |
|
|