OBJECTIVES: We present a practical method for correlating computed tomography (CT) scans with hearing loss in otosclerosis. METHODS: We reviewed the CT scans of 18 patients (34 ears) with clinical otosclerosis who were seen between 2007 and 2008. The scans were reviewed by an otologist in a clinical office setting, followed by a blinded radiologist working at an imaging workstation. The 5 most commonly affected sites in otosclerosis were evaluated for evidence of otospongiosis and then correlated with the degree of air-bone gap and sensorineural hearing loss. RESULTS: Positive CT findings were noted in 70.5% of ears, with a 94% concordance between readings. The sites affected included the ante fenestram (21 ears), round window niche (12), cochlear promontory (4), cochlear apex (3), and posterior fenestram (2). The average air-bone gap increased with each additional site of involvement within an otic capsule (p = 0.004). The bone conduction threshold also increased, on average, with each additional affected site (p = 0.047). CONCLUSIONS: Most patients with clinical evidence of otosclerosis have evidence of otosclerosis on CT that is readily detected in the office setting. Ears with more affected sites have a significantly greater degree of air-bone gap and sensorineural hearing loss.
OBJECTIVES: We present a practical method for correlating computed tomography (CT) scans with hearing loss in otosclerosis. METHODS: We reviewed the CT scans of 18 patients (34 ears) with clinical otosclerosis who were seen between 2007 and 2008. The scans were reviewed by an otologist in a clinical office setting, followed by a blinded radiologist working at an imaging workstation. The 5 most commonly affected sites in otosclerosis were evaluated for evidence of otospongiosis and then correlated with the degree of air-bone gap and sensorineural hearing loss. RESULTS: Positive CT findings were noted in 70.5% of ears, with a 94% concordance between readings. The sites affected included the ante fenestram (21 ears), round window niche (12), cochlear promontory (4), cochlear apex (3), and posterior fenestram (2). The average air-bone gap increased with each additional site of involvement within an otic capsule (p = 0.004). The bone conduction threshold also increased, on average, with each additional affected site (p = 0.047). CONCLUSIONS: Most patients with clinical evidence of otosclerosis have evidence of otosclerosis on CT that is readily detected in the office setting. Ears with more affected sites have a significantly greater degree of air-bone gap and sensorineural hearing loss.
Authors: P Puac; A Rodríguez; H-C Lin; V Onofrj; F-C Lin; S-C Hung; C Zamora; M Castillo Journal: AJNR Am J Neuroradiol Date: 2018-04-05 Impact factor: 3.825
Authors: Péter Révész; Balázs Liktor; Bálint Liktor; István Sziklai; Imre Gerlinger; Tamás Karosi Journal: Eur Arch Otorhinolaryngol Date: 2015-01-06 Impact factor: 2.503
Authors: Balázs Liktor; Péter Révész; Péter Csomor; Imre Gerlinger; István Sziklai; Tamás Karosi Journal: Eur Arch Otorhinolaryngol Date: 2013-09-19 Impact factor: 2.503