Navigation guidance in neuroendoscopic management of complex hydrocephalus.

Patients with multiloculated hydrocephalus have multiple, separate abnormal CSF collections with no communication between them. Causes include complications of neonatal meningitis, germinal matrix hemorrhage in neonates, head trauma, and intracranial surgery. Endoscopic fenestration with shunt insertion is a safe and less invasive technique as the initial treatment. In this video, the authors demonstrate a few cases in which electromagnetic navigation was used with a stylet inserted through the operating endoscope to guide the surgeon. Modalities such as insertion of intraventricular contrast and fluorescein may be used as adjuvants, as demonstrated. The use of navigation helps to identify distorted anatomical landmarks and guides surgery. The video can be found here: https://stream.cadmore.media/r10.3171/2023.1.FOCVID22152.