선천성 유양동 진주종을 포함한 세 가지 외배엽 기원의 선천성 기형 1예

Abstract

There are several congenital anomalies of the mastoid and external ear. The external ear and mastoid form during the developmental process through the differentiation of ectoderm and mesoderm, and anomalies can arise at various stages. While most congenital anomalies can be easily diagnosed through physical examination, some cases, such as congenital mastoid cholesteatoma, may delay diagnoses. We present a successfully treated case that involved the removal of three simultaneous congenital anomalies of ectodermal origin, which included preauricular fistula, congenital mastoid cholesteatoma, and postauricular epidermal cyst, all found on one ear in a single patient. Copyright© 2023 Korean Society of Otorhinolaryngology-Head and Neck Surgery.