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KMID : 1094020210380030159
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Journal of Veterinary Clinics
2021 Volume.38 No. 3 p.159 ~ p.162
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External Auditory Canal Atresia with Otitis Media in a Dog
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Kim Ah-Reum
Han Chang-Hee
Hwang Gun-Ha
Kim Rak-Hoon
Go Woo-Hyun
Lee Ji-Yeong
Lee Jong-Bong
An So-Yon
Hwang Tae-Sung
Lee Dong-Bin
Lee Jae-Hoon
Lee Hee-Chun
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Abstract
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A 5-year-old, intact male, poodle dog with right external auditory canal obstruction and subaural mass was presented. Physical examination revealed that right external auditory canal opening was absent and right head tilt was identified. Aspiration in right subaural mass revealed a small amount of dark brown exudate. Streptococcus canis and Staphylococcus spp. were identified on the microbial culture. Radiography of the skull was revealed absence of air-filled ear canal at the right external ear canal (EEC) level. Computed tomography (CT) revealed well capsulated, hypoattenuated mass in the right EEC region. On the contrast enhanced CT images, rim enhancement around the mass and ear canal obstruction were identified. Fluid attenuated material filled with right bulla. Mild thickening of the right tympanic bulla wall with mild lytic lesion of the ventral wall were found. Based on the images findings, the case was tentatively diagnosed as right external auditory canal atresia with otitis media. Total ear canal ablation and lateral bulla osteotomy was performed. The entire ear canal was removed, numerous hair in the canal and the thickening wall were founded. Right ear canal was sent for histopathological evaluation and found to otitis externa. The patient was followed up for two weeks and there were no complications. This report described the CT diagnosis of right EEC atresia with otitis media rarely reported in small breed dogs.
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KEYWORD
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external auditory canal atresia, otitis media, otitis externa, dog
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