眼窩内伸展を伴う甲状腺癌の頭蓋骨転移の1例

A Case of Calvarial Metastasis of Thyroid Carcinoma with Intraorbital Extension

I．はじめに

　甲状腺癌はしばしば血行性転移をきたし，頭蓋骨への転移も決して稀ではない．しかし頭蓋冠への転移で，眼窩内伸展をきたし眼球突出を呈した例は極めて稀であり，われわれが検索し得た範囲内では，その報告例は見当たらない．

　今回，われわれは眼球突出，側頭部腫瘤を主訴として来院した眼窩内伸展を伴う甲状腺癌の頭蓋骨転移の症例に対し，術前栄養血管塞栓術を施行し，これを全摘し得たので，若干の文献的考察を加えて報告する．

A 63-year-old man came to our hospital with com-plaints of exophthalmos and a tumor in the right tem-poral region. Physical examination revealed not only these findings but also a tumor in the right lateral side of the neck. Plain skull X-ray showed radiolucent area with irregular non-sclerotic margin in the right tempor-al region of the skull and erosion of the lateral half of the right minor sphenoid wing.

Post-contrast CT demonstrated a homogenously en-hanced tumor in the right temporal region with ex-tracranial and intracranial extension, partly invading the right orbita, which compressed the eyeball antero-inferiorly.