ependymomas are glial tumors originate from ependymal cells lining the ventricles and the central canal of the spinal cord. two thirds of ependymomas arise in the infratentorial or intraventriclesandone-third aredetected in supratentorial area. however supratentorial “cortical” ependymomas are veryuncommon. ependymomas are usually infratentorial, intraventricular tumor, including 2–9% of all ce...

Background & Aims: Sleep disorders are common complains in patients with cerebral stroke; studies on these issues are limited. We aimed to evaluate the sleep changes in patients with supratentorial ischemic stroke. Methods: In this cross sectional study, 38 patients (19 patients in supratentorial ischemic stroke group and 19 people in control group) were evaluated. Total sleep time, sleep effic...

Hemangioblastomas are extremely rare in supratentorial locations, and to date, approximately 128 cases of supratentorial hemangioblastoma have been reported in the literature. Here, we report a female case of supratentorial hemangioblastoma, not associated with von Hippel-Lindau disease. We describe its clinical, neuropathological, and neuroradiological characteristics, elaborate the surgical p...

Intracranial pressure was raised by expansion of a supratentorial subdural ballon in anaesthetized baboons. Pressures were measured at several sites, both supratentorial and infratentorial, and cerebral blood flow was measured in each cerebral hemisphere separately. Pressures recorded from the right and left lateral ventricles corresponded closely throughout. Highly significant correlations wer...

BACKGROUND Brain tumors are the second most common malignancy in childhood and they are also the most common solid tumors in children and the most frequent cause of morbidity and mortality associated with cancer in this age. OBJECTIVE To determine the clinical presentation of supratentorial and infratentorial intracranial tumors in pediatric patients. MATERIAL AND METHODS An observational, ...

Approximately 50% of all childhood brain tumours arise in the infratentorial fossa and the most common tumours in this region of the brain are cerebellar astrocytomas, medulloblastomas, ependymomas, and brainstem gliomas [1]. Conversely in the suratentorial fossa, up to 20% of childhood tumours arise in the suprasellar region with craniopharyngiomas, visual pathway gliomas, and germinomas as th...

BACKGROUND In the recent literature there is no consensus regarding the relationships between crossed cerebellar diaschisis (CCD) with the primary lesion size, severity or location. Thus, the aim of the present study was to investigate relationship between the size and severity of cerebral lesions and CCD in patients with chronic stroke, using voxel-based analysis of Tc-99m ECD single-photon em...

Crossed cerebellar diaschisis (CCD) is well described in the chronic phase of stroke, but few data describe acute CCD and its serial changes after reperfusion. Using positron emission tomography (PET), we studied acute CCD with respect to supratentorial perfusion and outcome measures. In 19 acute stroke patients receiving intravenous thrombolysis (<3 h), 15O-water PET assessed CCD and supratent...