| Ischemia and necrosis (I) |
| Location |
- Perianastomotic – within 1 cm of anastomosis
|
- Extending >1 cm from anastomosis to major airways (bronchus intermedius and distal left main-stem)
|
- Extending >1 cm from anastomosis into lobar or segmental airways
|
| Extent |
- <50% circumferential ischemia
|
- >50 to 100% circumferential ischemia
|
- <50% circumferential necrosis
|
- >50 to 100% circumferential necrosis
|
| Dehiscence (D) |
| Location |
- Cartilaginous
|
- Membranous
|
- Both
|
| Extent |
- 0 to 25% of circumference
|
- >25 to 50% of circumference
|
- >50 to 75% of circumference
|
- >75% of circumference
|
| Stenosis (S) |
| Location |
- Anastomotic
|
- Anastomotic plus lobar/segmental
|
- Lobar/segmental only
|
| Extent |
- 0 to 25% reduction in cross-sectional area
|
- >25 to 50% reduction in cross-sectional area
|
- >50 but <100% reduction in cross-sectional area
|
- 100% obstruction
|
| Malacia (M) |
| Location |
- Perianastomotic – within 1 cm of anastomosis
|
- Diffuse – involving anastomosis and extending beyond 1 cm
|
