| Condition | Frontal sinus aplasia | ||
|---|---|---|---|
| Bilateral | Unilateral | ||
| Right | Left | ||
| Allergic rhinitis | 0 | 3 | 2 |
| Brain ischemia | 0 | 1 | 0 |
| Concha bullosa | 0 | 1 | 0 |
| Convulsion | 1 | 0 | 0 |
| Deviated nasal septum | 6 | 3 | 2 |
| Dizziness | 0 | 1 | 0 |
| Facial trauma | 1 | 0 | 0 |
| Headache | 0 | 4 | 1 |
| Hypertrophy inferior turbinates | 1 | 0 | 0 |
| Nasal polyposis | 1 | 1 | 0 |
| Nasopharyngeal mass | 0 | 1 | 0 |
| Rhinosinusitis | 2 | 6 | 0 |
| Septal perforation | 1 | 1 | 0 |
| Thyroid mass | 1 | 1 | 1 |
| Thyroid nodule | 1 | 0 | 0 |