眼窩内腫瘍31例の治療経験:fronto-orbito-zygomatic approachによる全摘出術を中心に

Usefulness of fronto-orbito-zygomatic approach for intraorbital tumors:report of 31 cases

I．はじめに

　眼窩内腫瘍は頻度としては比較的少ないものであるが，その組織型は多種にわたり選択すべき手術アプローチも異なってくる．われわれは当施設において経験した眼窩内腫瘍について手術アプローチを中心に検討を加えた．

We have encountered 31 cases of intraorbital tumors at the Kobe University Hospital between 1971 and 1996. We reviewed those cases taking into account the surgical approaches used, the removability of the tumors and functional outcome. Before 1991, frontal or fronto-temporal craniotomy had been mostly used whereas the fronto-orbito-zygomatic approach or fron-to-orbital approach has been used only since 1992. Af-ter introduction of these approaches, functional out-come was significantly improved. Most of the tumors have been successfully removed totally. In particular, this approach is thought to be useful for tumors located in the deep portion of the orbit and for tumors extend-ing intracranially. In addition, removal of the anterior clinoid process and the opening of the optic canal as well as the superior orbital fissure provides a wider op-erative view and enables the transposition of the optic nerve safely.