cephalocentesis

Passage of a hollow needle or trocar and cannula into the brain to drain or aspirate an abscess or the fluid of a hydrocephalus. [cephalo- + G. kentesis, puncture]

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ceph·a·lo·cen·te·sis (sef″ə-lo-sen-teґsis) [cephalo- + -centesis] the surgical puncture of the skull.