외이도에 발생한 동정맥기형 1예

초록

Benign vascular tumors are relatively common in the head and neck region, but are rarelyfound in the ear. Among vascular tumors, infantile hemangioma stands as the prevailing enti-ty, characterized by a rapid initial proliferation of endothelial cells, succeeded by a gradual re-gression over the course of several years. In contrast, arteriovenous malformation (AVM) is aless common phenomenon, originating from peripheral vascular anomalies during embryo-genesis, and it does not undergo spontaneous regression. Specifically, the occurrence of AVMwithin the external auditory canal are exceedingly uncommon. Here, we describe a case of a49-year-old male patient who had a mass incidentally discovered in the external auditory ca-nal, but refused initial treatment. He later returned as the mass enlarged. This case could havebeen clinically misdiagnosed as a hemangioma, but was ultimately diagnosed pathologically as an AVM.

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