Computed tomography or pulmonary angiographic findings. Data refer to numbers of patients.
| Site of Involvement | Involved Segments of the Pulmonary Artery | ||
|---|---|---|---|
| Stenosis | Occlusion or Near Occlusion | Poststenotic Dilation | |
| Right main pulmonary arteries | 16 | 6 | 2 |
| Left main pulmonary arteries | 4 | 2 | 4 |
| Right upper lobe segmental arteries, 3 | 12 | 66 | 12 |
| Left upper lobe segmental arteries, 3 | 6 | 10 | 26 |
| Right middle lobe segmental arteries, 2 | 2 | 50 | 0 |
| Left lingular segmental artery, 2 | 8 | 16 | 4 |
| Right lower lobe segmental arteries, 5 | 28 | 56 | 30 |
| Left lower lobe segmental arteries, 5 | 40 | 64 | 8 |