Congenital arachnoid cyst of the lateral ventricles in children

Abstract

The authors report a series of three children with symptomatic congenital arachnoid cyst of the lateral ventricles. Presenting symptoms consisted of macrocephally, delay in psychomotor development, and seizures. CT findings were of a well-defined cystic lesion placed in the atrium of the lateral ventricle. One child was treated by direct cyst exposure and cysto-peritoneal shunt. The other two were treated with ventriculo-cysto-peritoneal shunts; in one of these, we used a ventriculoscope both for cyst fenestration and for accurate shunt placement. The origin of intraventricular arachnoid cysts seems to be secondary to the displacement of arachnoid cells by the vascular mesenchyma, through the choroid fissure, during the process of choroid plexus development.

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

“…Among these 22 lateral ventricular arachnoid cysts, there were 7 cases of pediatric lateral ventricular arachnoid cysts, all of which occurred in males compared with the authors' case who was female [2,6,8,12,24].…”

“…Some authors have advocated open cyst removal especially for fourth ventricular arachnoid cysts [1,10]. Other authors also have recommended the combined approach of shunt and open fenestration or endoscopic fenestration for the lateral ventricular arachnoid cysts [8,12]. In the review of 7 pediatric arachnoid cyst cases of the lateral ventricular arachnoid cyst in the literature, the patients were treated with cystoperitoneal shunt in 1 case, fenestration in 2 cases, fenestration and shunt in 2 cases, endoscopic fenestration in 1 case, endoscopic fenestration and shunt in 1 case, and shunt and open removal in 1 case.…”

“…In the review of 7 pediatric arachnoid cyst cases of the lateral ventricular arachnoid cyst in the literature, the patients were treated with cystoperitoneal shunt in 1 case, fenestration in 2 cases, fenestration and shunt in 2 cases, endoscopic fenestration in 1 case, endoscopic fenestration and shunt in 1 case, and shunt and open removal in 1 case. If the authors' case is included, the combined approach totals 5 cases [2,6,8,12,24]. In the literature that describes 15 adult arachnoid cysts of the lateral ventricle, the patients were treated with open cyst removal in 2 cases, open fenestration or partial cyst removal in 7 cases, endoscopic fenestration in 2 cases, fenestration and shunt in 2 cases, and no treatment in 2 cases [3,5,7,9,11,13,17,[21][22][23].…”

Neuroendoscopic Removal of Astrocytoma in Unilateral Ventricle in a Patient With Enlarged Perivascular Spaces

“…In the future, one can expect routine use of the endoscope for management of a multitude of neurosurgically treatable pathologic conditions, either as the primary surgical approach or as an adjunct. [13][14][15][16][17] …”

Ectopic Choroid Plexus within a Juvenile Arachnoid Cyst of the Cerebellopontine Angle: Cause of Cyst Formation or Reason of Cyst Growth

“…Another distinctly different entity are arachnoid cysts within the ventricles. They are thought to occur secondary to the displacement of arachnoid cells by the vascular mesenchyma, through the choroid fissure, during the process of choroid plexus development [25]. …”