Magaña RJI, Domínguez CLG

Language: Spanish
References: 3
Page: 231-232
PDF size: 135.71 Kb.

ABSTRACT

Introduction: ossicular chain agenesis is rare (0.5 to 1.2%), secondary to maldevelopment of the first and second pharyngeal arches in weeks 3 to 10 of gestation. Clinical case: 22-year-old female with conductive hearing loss in the left ear. On examination: normal auricles and tympanic membranes, absent ipsilateral stapedial reflex, normal right Audiometry normal in right ear (RE) and ascending profile curve, due to severe hearing loss, conductive in left ear (LE). Tomography showed agenesis of the long process of the incus and of the left stapes, the footplate present. Conclusion: patient with transmission hearing loss due to agenesis of the stapes suprastructure.

REFERENCES

1. Zambrana H, De Maio S, García DP. Disgenesia da cadena osicular. A propósito de un caso (cadavérico). Rev FASO. 2015; 22: 28-31.

2. Rodríguez DF, Mínguez MN, Navarro PI, Albadejo DM et al. Agenesia de la supraestructura del estribo. Acta Otorrinolaringol Esp. 2005; 56: 488-490.

3. Undabeitia JI, Undabeitia J, Cianci L, Padilla L, Petreñas E et al. Bilateral congenital absence of the stapes superstructure in two siblings. Case Rep Otolaryngol. 2014; 2014: 901672. doi: 10.1155/2014/901672.