Analysis of Inner Ear Anomalies in Unilateral Congenital Aural Atresia Combined With Microtia
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Objectives. The aim of this study was to analyze the incidence of inner ear anomalies in patients with unilateral congenital aural atresia (CAA) combined with microtia. Methods. We retrospectively reviewed 61 patients with unilateral CAA combined with microtia who underwent high-resolution temporal bone computed tomography (TBCT) and hearing examination. Inner ear anomalies were analyzed using TBCT and evaluated according to the Jahrsdoerfer grading system, Marx classification, and extent of inferior displacement of the mastoid tegmen. Results. Inner ear anomalies were observed in 14 patients (23.0%). Lateral semicircular canal (LSCC) dysplasia was the most common inner ear anomaly, with an incidence of 16.4%. The incidence was significantly higher on the pathologic side than on the unaffected side (P=0.002). All vascular anomalies were observed in the high-riding jugular bulb, with an incidence of 24.6%. The incidence was significantly higher on the pathologic side than on the unaffected side (P<0.001). LSCC dysplasia was significantly more common in patients with a lower Jahrsdoerfer score (odds ratio, 0.66; P=0.004). Conclusion. The incidence of inner ear anomalies was relatively high in patients with unilateral CAA combined with microtia; LSCC dysplasia was the most common anomaly and the probability of coexistence was higher in patients with a lower Jahrsdoerfer score.
Abstract
Objectives. The aim of this study was to analyze the incidence of inner ear anomalies in patients with unilateral congenital aural atresia (CAA) combined with microtia. Methods. We retrospectively reviewed 61 patients with unilateral CAA combined with microtia who underwent high-resolution temporal bone computed tomography (TBCT) and hearing examination. Inner ear anomalies were analyzed using TBCT and evaluated according to the Jahrsdoerfer grading system, Marx classification, and extent of inferior displacement of the mastoid tegmen. Results. Inner ear anomalies were observed in 14 patients (23.0%). Lateral semicircular canal (LSCC) dysplasia was the most common inner ear anomaly, with an incidence of 16.4%. The incidence was significantly higher on the pathologic side than on the unaffected side (P=0.002). All vascular anomalies were observed in the high-riding jugular bulb, with an incidence of 24.6%. The incidence was significantly higher on the pathologic side than on the unaffected side (P<0.001). LSCC dysplasia was significantly more common in patients with a lower Jahrsdoerfer score (odds ratio, 0.66; P=0.004). Conclusion. The incidence of inner ear anomalies was relatively high in patients with unilateral CAA combined with microtia; LSCC dysplasia was the most common anomaly and the probability of coexistence was higher in patients with a lower Jahrsdoerfer score.
참고문헌 (19)
- Schuknecht HF, "Congenital aural atresia", Laryngoscope, 99(9), pp.908~917 (1989)
- Genc S, "Microtia and congenital aural atresia", J Craniofac Surg, 23(6), pp.1733~1735 (2012)
- Vrabec JT, "Inner ear anomalies in congenital aural atresia", Otol Neurotol, 31(9), pp.1421~1426 (2010)
- Mayer TE, "High-resolution CT of the temporal bone in dysplasia of the auricle and external auditory canal", AJNR Am J Neuroradiol, 18(1), pp.53~65 (1997)
- Yuen HY, "Computed tomography of common congenital lesions of the temporal bone", Clin Radiol, 58(9), pp.687~693 (2003)
- Naunton RF, "Inner ear anomalies : their association with atresia", Laryngoscope, 78(6), pp.1041~1049 (1968)
- Phelps PD, "Congenital lesions of the inner ear, demonstrated by tomography", Arch Otolaryngol, 100(1), pp.11~18 (1974)
- Halle TR, "Inner ear anomalies in children with isolated unilateral congenital aural atresia", Int J Pediatr Otorhinolaryngol, 95, pp.5~8 (2017)
- Balaker AE, "Fibrous incudostapedial joint in congenital aural atresia", Otolaryngol Head Neck Surg, 150(4), pp.673~676 (2014)
- Yellon RF, "Prospective blinded study of computed tomography in congenital aural atresia", Int J Pediatr Otorhinolaryngol, 74(11), pp.1286~1291 (2010)
- Jahrsdoerfer RA, "Grading system for the selection of patients with congenital aural atresia", Am J Otol, 13(1), pp.6~12 (1992)
- Dedhia K, "Anatomic variants on computed tomography in congenital aural atresia", Otolaryngol Head Neck Surg, 147(2), pp.323~328 (2012)
- Kim DW, "Continuity of the incudostapedial joint : a novel prognostic factor in postoperative hearing outcomes in congenital aural atresia", Acta Otolaryngol, 131(7), pp.701~707 (2011)
- Ju YH, "The extent of inferior displacement of the mastoid tegmen is related to the severity of congenital aural atresia", Acta Otolaryngol, 134(3), pp.244~249 (2014)
- Sennaroglu L, "A new classification for cochleovestibular malformations", Laryngoscope, 112(12), pp.2230~2241 (2002)
- Brook CD, "The prevalence of high-riding jugular bulb in patients with suspected endolymphatic hydrops", J Neurol Surg B Skull Base, 76(6), pp.471~474 (2015)
- Frenzel H, "Grading system for the selection of patients with congenital aural atresia for active middle ear implants", Neuroradiology, 55(7), pp.895~911 (2013)
- Yu Z, "Facial nerve course in congenital aural atresia : identified by preoperative CT scanning and surgical findings", Acta Otolaryngol, 128(12), pp.1375~1380 (2008)
- Takegoshi H, "Facial canal anatomy in patients with microtia : evaluation of the temporal bones with thin-section CT", Radiology, 225(3), pp.852~858 (2002)