Hydrocephalus in Dandy-Walker malformation.

Area of Science:

• Neurology
• Pediatric Neurosurgery
• Medical Imaging

Background:

• Dandy-Walker malformation diagnosis remains challenging despite its 1887 description.
• Differential diagnosis with other posterior fossa CSF collections is often difficult.
• Inconsistent classifications can group diverse malformations under the Dandy-Walker label, complicating management.

Purpose of the Study:

• To review the embryologic, etiologic, pathogenetic, clinical, and neuroradiological aspects of Dandy-Walker malformation.
• To evaluate therapeutic options, prognosis, and intellectual outcomes associated with the condition.

Main Methods:

• Extensive literature review was conducted.
• Key aspects examined include embryology, etiology, pathogenesis, clinical presentation, and neuroradiology.
• Therapeutic strategies, prognosis, and intellectual outcomes were also reviewed.

Main Results:

• Modern neuroradiologic techniques, particularly CSF flow MR imaging, aid in identifying true Dandy-Walker malformations.
• Single shunting (ventriculo-peritoneal or cyst-peritoneal) effectively manages ventricle and cyst size.
• Endoscopic third ventriculostomy is a viable alternative, especially for older children, to minimize shunt-related complications.

Conclusions:

• Accurate diagnosis relies on precise interpretation of advanced imaging like CSF flow MR imaging.
• Surgical interventions, including shunting and endoscopic third ventriculostomy, are crucial for managing hydrocephalus.
• Prognosis and intellectual outcome are significantly influenced by associated malformations, vermian hypoplasia severity, and hydrocephalus management effectiveness.