Pathogenesis and Diagnostic Pitfalls of Ventricular Diverticula: Case Report and Review of the Literature

Abstract

This report discusses the pathogenesis of ventricular diverticula and demonstrates that ventriculography can be used to differentiate atrial diverticula from other posterior fossa lesions when time-consuming multiplanar magnetic resonance imaging cannot be afforded on an emergency basis.

A large arachnoid cyst of the lateral ventricle extending from the supracerebellar cistern—case report

“…This arachnoid cyst showed clear extension from the supracerebellar subarachnoid space into the lateral ventricle. A rare intraventricular arachnoid cyst that extends from the supracerebellar space has similar radiological findings with common lateral ventricular diverticulum that extends into the supracerebellar cistern, especially from unilateral obstruction of the foramen of Monro [4]. Both may show a dilated lateral ventricle, displaced midline to the contralateral side, and a supracerebellar cyst.…”

Expansion Diverticulum of the Suprapineal Recess Causing Cerebellar Ataxia

“…cases, while the origin from the third ventricle is reported in about 30% of cases 1 . The suprapineal, lamina terminalis, and infundibular recesses are the weakest parts of the third ventricle.…”

“…The third ventricle represents the point of origin of about 30% of ventricular diverticula 1 . The weakest parts of the third ventricle are the lamina terminalis, the infundibular and suprapineal recesses 2 , the latter being among the most common sites of diverticulum formation.…”

Spontaneous third ventriculocisternostomy in an infant with obstructive hydrocephalus

“…Although they can arise in a variety of locations, including the lateral, third, and fourth ventricles, they most commonly arise from the atrium of the lateral ventricle. 1,4,11 Ventricular hypertension observed in patients with a ventricular diverticulum is usually not relieved by the diverticulum, and in fact the diverticulum may exacerbate the hydrocephalus or cause neurological deficits due to mass effect. Ventricular diverticula are common and have been reported to occur in up to 25% of patients with severe, long-standing obstructive hydrocephalus.…”