Definition: Inflammation causing generalized thickening of the mucosa lining the paranasal sinuses.
Radiographic Features:
- Location: Can affect any or all paranasal sinuses
- Edge: Well-defined to well-localized
- Shape:
- 2D images: Band-like appearance following sinus borders
- 3D images: • Band-like appearance along sinus borders • Partial or complete opacification of sinus (especially maxillary)
- Internal: Radiopaque
- Number: May involve single or multiple sinuses
Key Diagnostic Signs:
- Thickened radiopaque band along sinus borders
- Possible sinus opacification on 3D imaging
Clinical Significance:
- Can cause facial pain, headaches, and nasal congestion
- May impact dental procedures involving the maxillary sinus
- Chronic sinusitis can lead to complications if untreated
Note: Radiographic findings should be correlated with clinical symptoms for accurate diagnosis. Dental pathology (e.g., periapical lesions) can sometimes mimic or cause sinusitis, emphasizing the importance of comprehensive evaluation.