耳介周囲に発生した石灰化上皮腫の２例

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  • Two Cases of Calcifying Epithelioma in the Periauricular Region.

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We report two cases of calcifying epithelioma, one in the preauricular region and the other in the infraauricular region. Calcifying epithelioma is a benign tumor originating from the hair matrix cells. It usually occurs in children and young adults. Calcifying epitheliomas are commonly observed on the face, neck and upper extremities. Most cases involve subcutaneous, solitary, firm nodules measuring 1 to 3cm in diameter. Despite these clinical characteristics, preoperative diagnosis based on clinical examination is sometimes difficult because of the various manifestations presented by the tumor. In particular, in the periauricular region it is occasionally difficult to differentiate the lesions from those involving the parotid gland, or from parotid gland tumors. For accurate diagnosis, it is necessary to carefully evaluate clinical findings together with radiography, sonography, CT, and MRI findings.

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