Table III.
Uncommon anatomic variations in CT scans of 140 patients with chronic paranasal sinusitis.
| Uncommon anatomic variations | Right, N (%) | Left, N (%) | Bilateral, N (%) | Total, N (%) |
|---|---|---|---|---|
| Uncinate process | ||||
| Pneumatization | 1 (0.7) | 3 (2.1) | - | 4 (2.8) |
| Separated | 2 (1.4) | - | - | 2 (1.4) |
| Large concha bullosa of middle turbinate | 3 (2.1) | 1 (0.7) | 0 | 4 (2.8) |
| Massive pneumatization frontal sinus | - | 2 (1.4) | 1 (0.7) | 3 (2.1) |
| Lateralized maxillary sinus | - | - | 2 (1.4) | 2 (1.4) |
| Single sphenoid sinus | 2 (1.4) | |||
| Nontraumatic protusion of orbital contents through dehiscence of lamina papyracea | - | 1 (0.7) | - | 1 (0.7) |