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Anales de Otorrinolaringología Mexicana

2004, Number 3

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Otorrinolaringología 2004; 49 (3)

Anatomical ear alterations detected by computed tomography in children diagnosed with congenital bilateral cortipathy of non-determined aetiology

Mejía-Valdez P, Gutiérrez-Farfán I, Arch-Tirado E

Language: Spanish
References: 18
Page: 66-71
PDF size: 70.60 Kb.


ABSTRACT

Hearing is essential for the normal development of language. The aetiologic diagnosis helps the specialist anticipate the forecast and course of deafness. A computed tomography focused on the petrous pyramid and on the internal ear has helped establish its aetiology, with a percentage variation from 6.8 to 28.4%, according to results from several authors. The objectives were to establish the type of malformation of the internal ear that is more frequent in our population, and to analyze if there is a relationship between the malformations found and the data. The sample consisted of 68 children from 2 to 12 years of age, to which an audiometry, logoaudiometry and computed tomography were performed. Of those, 14 presented malformations of the internal ear: nine corresponded to dysplasia of Mondini, two to dysplasia of Michel, one to hypoplasia of internal ear, one with hyperdensity of both cochleas and fibrosis of the VIII pair, and one with a narrow internal auditive conduit. In the audiometries, we observed that the same malformation presented different patterns, which can be related to the severity of the malformation, functionality of the ciliated cells, or to neural damage, independently from the malformation. Due to the found results, we consider it is necessary a computed tomography and a reliable evaluation of the indicated treatment usefulness be carried out on all children with a diagnosis of bilateral cortipathy of non-determined aetiology.


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