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Table 1: Summary of patient demographics, reasons for initial ENT visit, and relevant medical history relating to temporal bone
Patient information 
Demographics 
 No. of patients 95
 Age at MR imaging (average) (range) (yr) 58 (18−84)
 Sex (No.) 
  Female 53
  Male 42
Reason for ENT visit 
 Hearing loss 51
 Tinnitus 11
 Vertigo/dizziness/ataxia 13
 Schwannoma/cholesteatoma/other tumor 13
 Headache 2
 Other 5
No. of patients with a mastoid effusion^{^a} 24
No. of patients with prior surgery on temporal bone 8
 Tympanomastoidectomy 6
 Tympanotomy 1
 Myringotomy 1
↵a No. of patients with clinical charts indicating the presence of granulation tissue in RW.

Patient information
Demographics
No. of patients	95
Age at MR imaging (average) (range) (yr)	58 (18−84)
Sex (No.)
Female	53
Male	42
Reason for ENT visit
Hearing loss	51
Tinnitus	11
Vertigo/dizziness/ataxia	13
Schwannoma/cholesteatoma/other tumor	13
Headache	2
Other	5
No. of patients with a mastoid effusion^{^a}	24
No. of patients with prior surgery on temporal bone	8
Tympanomastoidectomy	6
Tympanotomy	1
Myringotomy	1