A Case of Pediatric Middle Ear Teratoma

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  • 小児の中耳奇形腫例
  • 臨床 小児の中耳奇形腫例
  • リンショウ ショウニ ノ チュウジ キケイ シュレイ

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We report a case of infantile middle-ear teratoma. A 6-month-old girl was first seen and reported to have a history of refractory left-ear otitis media. Computed tomography (CT) and magnetic resonance imaging (MRI) showed a tumor occupying the tympanic cavity and eustachian tube. The tumor, was biopsied twice transaural, under general anesthesia, contained squamous epithelium, striated muscle, and adipose tissue, suggesting middle-ear teratoma. The tumor was resected completely in canal wall tympanoplasty with mastoidectomy under general anesthesia. Histologically, the heterogeneous tumor consisted of tissues including squamous epithelium, sebaceous gland and hair follicle, skin appendages, adipose tissue, striated muscle, cartilage, minor salivary-gland-like tissue, and bone. Mature middle-ear teratoma was diagnosed due to the absence of immaturity and malignancy. The girl remains recurrence-free in the 3 years since surgery.<br>

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