نتایج جستجو برای: posterior fossa
تعداد نتایج: 117627 فیلتر نتایج به سال:
BACKGROUND Hemangioblastomas (HGBs) are the most common primary intra-axial posterior fossa tumor in adults. Although spontaneous hemorrhage of these tumors is exceedingly rare, despite their vascular nature, we describe a case of recurrent hemorrhage with associated tonsillar herniation, and demonstrate that a surgical approach can provide a suitable outcome. CASE DESCRIPTION A 54-year-old f...
P02.16: Diagnosis and clinical attendance on fetuses with Galen's vein aneurysms-Report of two cases
Objective: To describe the possibility of rotation of the vermis as the cause of enlarged posterior fossa in the fetus. Methods: Eight women were referred to our ultrasound unit for evaluation of enlarged posterior fossa with suspected agenesis of the vermis on axial plane. All women underwent thorough ultrasound evaluation, including demonstration of the posterior fossa on midsagittal plane wi...
Posterior fossa surgery is demanding and hides a significant number of obstacles starting from the approach to the wound closure. The risk of cerebrospinal fluid (CSF) leakage in posterior fossa surgery given in the literature is around 8%. The present study aims to introduce a sandwich closure of the dura in posterior fossa surgery, which reduces significantly the number of CSF leaks (3.8%) in...
OBJECTIVE The aim of this study was to determine the posterior cranial fossa volume, cerebellar volume, and herniated tonsillar volume in patients with chiari type I malformation and control subjects using stereological methods. MATERIAL AND METHODS These volumes were estimated retrospectively using the Cavalieri principle as a point-counting technique. We used magnetic resonance images taken...
Dandy-Walker complex (DWC) is a malformative association of the central nervous system. DWC includes four different types: Dandy-Walker malformation (vermis agenesis or hypoplasia, cystic dilatation of the fourth ventricle and a large posterior fossa); Dandy-Walker variant (vermis hypoplasia, cystic dilatation of the fourth ventricle, normal posterior fossa); mega cysterna magna (large posterio...
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