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