乳児期に発生した板間層類上皮腫の1例

An Intradiploic Epidermoid Cyst of the Skull in Infancy:Case Report

Ⅰ．はじめに

　頭蓋骨に発生する類上皮腫は比較的稀な腫瘍であり，乳児期に発症した症例については過去の文献においても報告は少ない^{1,2,4,7,10）}．今回われわれは，左頭頂骨板間層に原発した類上皮腫の乳児発症例を経験したので若干の文献的考察を加え報告する．

An intradiploic epidermoid cyst of the skull in infancy is rare. We report a case of a 7-month-old girl with an intra-diploic epidermoid cyst of the left parietal bone. The patient was admitted to the department of pediatrics in, our hos-pital in March, 2000, complaining of a lump in the scalp with a diameter of 1.5 cm. The pediatrician doubted that it was a case of Langerhans cell histiocytosis (LCH). In addition, as a result of further tests there were no systemic findings to suggest LCH. The skull x-ray showed round radiolucency of the left parietal bone.