cisternostomy

Full Definition

Cisternostomy is a neurosurgical procedure involving the opening of the cisterna magna, the largest CSF-containing space at the base of the brain, to provide cerebrospinal fluid drainage and pressure relief. This procedure is typically performed through a suboccipital approach and may be used when ventricular access is not possible or as an adjunct to other pressure-relieving measures. It can serve as both a diagnostic and therapeutic intervention in managing elevated intracranial pressure.

Usage

Usage note: Specify anatomical approach (suboccipital) when documenting procedure

In Context

• "Emergent cisternostomy was performed for massive posterior fossa swelling." — Operative report
• "The patient underwent cisternostomy when ventricular catheter placement failed." — Surgical consultation