乳児の耳介より発生した石灰化上皮腫（Malherbe's Tumor）の1例

CALCIFYING EPITHELIOMA IN AN INFANT

　I．はじめに

　Calcifying epithelioma（Malherbe's Tumor；Pilomatrixoma，pilomatricoma）は主に表皮下に被膜されて存在する硬い表皮性の良性腫瘍である。本腫瘍は皮膚科領域において報告されるものが多いが，耳鼻科領域での報告は非常に稀^7）8）である（第1表）。最近，われわれは1歳4カ月の乳児の耳介部に発生した症例を経験したので，報告し，併せて，若干の文献的考察を行なつた。

　A male infant, aged 16 months, was bought to authors' attention complaining of a firm tumor on the right preauricular region. Histopathological examination revealed the growth to be composed of shadow cells and small basophilic cells.

　Calcifying epitheliomas are chiefly found in young people affecting the face, neck and arm regions. The calcification that takes place in the shadow cells, however, is not an essential characteristic of this tumor.

　The tumor was removed surgically; no recurrence is seen.