頭ず蓋がい内ない

noun which may take the genitive case particle 'no'

intracranial; endocranial

Medical term meaning 'inside the skull'. Used attributively with の, as in 頭蓋内出血 (intracranial hemorrhage).

• 頭ず蓋がい内ない出しゅっ血けつは緊きん急きゅうの治ち療りょうが必ひつ要ようです。

  Intracranial hemorrhage requires emergency treatment.