Subependymoma is a rare, slow-growing, benign noninvasive tumor of the central nervous system that may be located in the fourth ventricle, the septum pellucidum, the third and the lateral ventricles, the aqueduct, and the proximal spinal cord. Symptoms, if any, usually result either from direct compression of the brain stem or from acute hydrocephalus due to occlusion of the foramen of Monro or...

Diverticulum of the lateral ventricle is an uncommon occurrence in patients with hydrocephalus [1-5]. Confusing this entity with similar-appearing abnormalities such as arachnoid cysts , cystic neoplasms, or the trapped fourth ventricle must be avoided to ensure proper mangement [6-8]. Although the pathologic and CT features have been described [1] , the sonographic appearance is not widely kno...

Choroid plexus papillomas (CPPs) are rare intracranial neoplasms, especially in the third ventricle. The most common site of presentation of these lesions is in the fourth ventricle in adults and lateral ventricles in children. We report a male child with a posterior third ventricular CPP who presented with the symptoms of increased intracranial pressure. Magnetic resonance imaging revealed hyd...

BACKGROUND AND PURPOSE Accurate measurement of the lateral ventricles is of paramount importance in prenatal diagnosis. Possible conflicting classifications caused by their measurement in different sectional planes by sonography and MR imaging are frequently raised. The objective of our study was to evaluate the agreement between ultrasonography and MR imaging in the measurement of the lateral ...

Glioblastoma multiforme (GBM) is known to present within the lateral ventricle but is relatively infrequent and predominantly found in the frontal horn or body of the ventricle. A GBM located within the trigone is rare, and one that appears well-circumscribed, homogeneous, and minimally contrast enhancing, as demonstrated in this patient, is highly unusual.

primary intracranial gliomas (1). They mainly occur in the cerebral hemispheres. Intraventricular location as a primary site is rare (1). Although the histologic features of intraventricular and parenchymal oligodendrogliomas are similar, their imaging characteristics and presenting symptoms are quite different. In this paper we present computed tomography (CT) and magnetic resonance imaging (M...

A true collision tumor is a rare entity composed of two histologically distinct neoplasms coinciding in the same organ. This paper reports a unique case of cerebral collision tumor consisting of two benign components. On the first hand, meningioma which is usually a benign lesion arising from the meningothelial cell in the arachnoidal membrane. On the other, cerebral cavernoma which is a well-c...

We recently experienced a case which had an aneurysm with Moyamoya disease. He developed by a sudden severe headach, vomitting and conscious disturbance. CT was performed, and it revealed hematoma having a diameter of 1. 0 cm adjacent to the anterior horn of the lateral ventricle in the head of the left caudate nucleus, and both lateral ventricles, 3rd ventricle, and 4th ventricle were found to...

Background & Importance: Idiopathic stenosis of the foramina of Magendie and Luschka is a rare cause of obstructive hydrocephalus involving the fourth ventricle. Case Presentation: We reported the case of a 40-year-old woman who developed headaches and vertigo for several months and more recently gait disturbance. The CT scan showed quadri-ventricular hydrocephalus involving mainly...

Isolated fourth ventricles were diagnosed by computed tomography (CT) in 16 children in a 3 year period. They all had had shunting of the lateral ventricles for hydrocephalus, and all needed subsequent shunt revisions. Seven patients without signs of raised intracranial pressure clinically had new posterior fossa signs at different intervals after lateral ventricular shunting. The clinical find...