Acta Medica Medianae
Vol. 39
No 3, 2000
UDK 61
YU ISSN 0365-4478

 



Contact:
Dragoslava ĐERIĆ
Institute for Otorhinolaryngology and Maxillofacial Surgery

CONGENITAL MALFORMATIONS OF THE EXTERNAL AND MIDDLE EAR: COMPUTERIZED TOMOGRAPHIC CLASSIFICATION

Dragoslava ĐERIĆ, Anđa JAŠOVIĆ, Nenad ARSOVIĆ and Miodrag DINIĆ

Institute for Otorhinolaryngology and Maxillofacial Surgery and
Institute for Radiology and Oncology of the Clinic center, Belgrade and
Otorhinolaryngological Department of the Military Hospital, Niš

The authors used the high-resolution computerized tomography (HRCT) for examining 52 congenital malformed ears in 45 children between 5 and 10 years of age. In six children the congenital malformations were bilateral. From the clinic aspect, the malformations were manifested as microtia, atresia of the external auditory channel and conductive hearing loss.
In analyzing the anatomic details and pathological changes on the CT sections the authors found three groups of malformations. In the first group the auditory ossicles were almost always malformed; in the second group, beside the deformed auditory ossicles in almost all the cases there was apneumatized mastoid found while in the third group the auditory ossicles were malformed, the mastoids were apneumatized and in more than half of the cases the cavum timpani was malformed or filled with mesenchyme.
These characteristics are of great importance in the surgical reconstruction of the congenital ear's malformations.

Key words: Congenital malformations, external and middle ear, classification