Congenital Aural Atresia prevalence in the Argentinian population

Publication date: Available online 20 March 2018
Source:Acta Otorrinolaringológica Española
Author(s): Mario Emilio Zernotti, Carlos A. Curet, Susana Cortasa, Mario Chiaraviglio, Maria Fernanda Di Gregorio
IntroductionCongenital Aural Atresia (CAA) or microtia is a malformation that results in esthetic and functional problems. There is little information on prevalence, considering that Latin American is the most affected region in the world.ObjectiveTo determine the prevalence of microtia, considering the different ethnical structure of the population.MethodsA retrospective analysis was performed of the clinical reports of newborn infants (public hospitals) in three different regions.ResultsThe incidence of CAA in Argentina was 1 case per 7500 new births (i.e. 1.3/10,000). Marked differences were found per geographical area. The means were calculated per year by bilateral parametric estimation, according to the ethnical origins of the population. In the Caucasoid area: 02.47/10,000 (±1.2), in the Mestizo area: 03.99/10,000 (±0.0) and finally in the Amerindian area: 20.93/10,000 (±0.1).ConclusionThis study shows different incidences according to the demographic features of the population from 1.90/10,000 to 20.9/10,000. This data indicates that CAA is associated with a genetic problem (ethnic differences).



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