Seat of the tumefction | Effective | Percentage |
Bilateral isthmolobar | 100 | 39.5 |
Right isthmolobar | 56 | 22.1 |
Left isthmolobar | 54 | 21.3 |
Right lobe | 6 | 2.4 |
Diffuse | 30 | 11.9 |
Left lobe | 5 | 2 |
Isthmus | 2 | 0.8 |
Total | 253 | 100 |