Table 1 Reporting checklist for preoperative HRCT of the temporal bone in otosclerosis
Reporting points | Clinical and surgical relevance | |
|---|---|---|
1. | Size and location of plaques | Size and location of plaques may correlate with severity of CHL/air-bone gap |
2. | Status of oval window | Complete obliteration may require surgical drilling prior to prosthesis insertion |
3. | Status of round window | Obliteration may result in a poor result after stapedectomy |
4. | Facial nerve canal | Floppy facial nerve may complicate oval window surgery or render this impossible |
5. | Concurrent middle ear pathology | Inflammatory disease must be treated prior to surgery |
6. | Ossicular chain integrity | Ossicular fixation, fusion and fracture may compound CHL |
7. | Sinus plate and jugular bulb | Dehiscent jugular bulb may complicate surgery |
8. | Inner ear pathology | Congenital cochlear and inner ear anomalies may preclude surgery |
9. | Opposite ear | Disease is bilateral in 80-85 % cases, even in absence of symptoms |