Radiological Findings of Michel Aplasia

Introduction: Congenital abnormalities of the inner ear is the most common cause of neurosensory hearing loss. Michel inner ear deformity is a rare developmental anomaly refers to the total aplasia of the inner ear. It is caused by developmental arrest of otic placode early during the third week of gestational age. Case report: We have discussed here that three year old girl diagnosed Michel aplasia with temporal bone computed tomography (CT) and temporal magnetic resonance imaging (MRI) findings.

[1]  Hatice Tuba Sanal Kas iskelet sisteminin değerlendirilmesinde radyolojik görüntüleme yöntemleri Radiologic imaging methods in the evaluation of musculoskeletal system , 2013 .

[2]  A. Ataş,et al.  Complete Labyrinthine Aplasia: Clinical and Radiologic Findings with Review of the Literature , 2009, American Journal of Neuroradiology.

[3]  I. Saatci,et al.  A New Classification for Cochleovestibular Malformations , 2002, The Laryngoscope.

[4]  H. C. Davidson,et al.  Imaging findings of cochlear nerve deficiency. , 2002, AJNR. American journal of neuroradiology.

[5]  H. Curtin,et al.  Anomalous facial nerve canal with cochlear malformations. , 2001, AJNR. American journal of neuroradiology.

[6]  C. Chouard,et al.  CT and MR findings of Michel anomaly: inner ear aplasia. , 1999, AJNR. American journal of neuroradiology.

[7]  J. Hersh,et al.  Michel's anomaly, type I microtia and microdontia. , 1991, Ear, nose, & throat journal.

[8]  G. Moonen,et al.  Neuronotrophic effect of developing otic vesicle on cochleo-vestibular neurons: evidence for nerve growth factor involvement , 1990, Brain Research.

[9]  W. House,et al.  Congenital malformations of the inner ear: A classification based on embryogenesis , 1987, The Laryngoscope.

[10]  S. Isenberg,et al.  Unilateral Complete Aplasia of the Inner Ear with Associated Tracheoesophageal Fistula: Report of a Case , 1979, Otolaryngology and head and neck surgery.

[11]  J. Lindsay Profound childhood deafness. Inner ear pathology. , 1973, The Annals of otology, rhinology, and laryngology.

[12]  M. E. Patterson,et al.  Congenital hearing impairment. , 1970, Otolaryngologic clinics of North America.

[13]  J. Bale,et al.  Mondini dysplasia and congenital cytomegalovirus infection. , 1994, The Journal of pediatrics.

[14]  J. Brunberg,et al.  CT of severe inner ear anomalies, including aplasia, in a case of Wildervanck syndrome. , 1992, AJNR. American journal of neuroradiology.

[15]  K. Steel,et al.  Hereditary inner-ear abnormalities in animals. Relationships with human abnormalities. , 1983, Archives of otolaryngology.