Biomedical subjects
Publications and source records attributed to M A Bayar.
The cavum septi pellucidi (CSP) and cavum Vergae (CV) are frequently seen in premature and term infants. These cavities rarely enlarge and become symptomatic we describe a giant CSP and CV cyst in an 18-month-old boy, extending to the posterior cranial fossa and causing hydrocephalus. The literature is reviewed, and the MRI and CT findings of the case are reported.
We report a fluid level in an acute extradural haematoma developing after placement of a ventriculo-peritoneal shunt for hydrocephalus. This fluid level was thought to be due to a mixture of blood and cerebrospinal fluid.
It has been shown that a long-acting angiotensin-converting enzyme inhibitor cilazapril prevents morphologic changes in arteries secondary to hypertension and endothelial damage, which are analogous to the changes in cerebral arteries following subarachnoid hemorrhage. In this study, the effect of cilazapril on chronic vasospasm was investigated on the rat femoral artery vasospasm model, and morphometric analyses were performed. Animals were divided into three groups. In group 1, femoral arteries were removed after cardiac perfusion. In groups 2 and 3, right femoral arteries were exposed to 0.1 mL autologous whole blood and wrapped with silastic cuff. Animals in group 3 received cilazapril (10 mg/kg) for 7 consecutive days. After the perfusion-fixation, femoral arteries were examined by light and transmission electron microscopy and processed for morphometric analysis. Vessels from animals in group 2 showed a significant luminal narrowing and morphologic changes throughout the vessel wall, while vessels from animals treated with cilazapril appeared nearly normal. These results suggest that cilazapril may be effective in the prevention of chronic vasospasm.
One year after trauma, diplopia, limitation of ocular movements on the left side, orbital asymmetry, and a growing skull fracture on the orbital roof were reported in an extraordinary case. While presenting this extraordinary localization of growing skull fractures, the anatomy, pathogenesis and the natural evolution of these lesions still remain obscure.
Findings on magnetic resonance imaging (MRI) in two cases of traumatic cervical fracture associated with ankylosing spondylitis are presented. In such patients cervical fracture usually occurs in the lower cervical spine from hyperextension injuries. Classic radiologic investigations including plain films, myelography, and computed tomography are insufficient because of osteopenia and distorted anatomy: MRI is superior to other techniques.
Eight cases of interhemispheric subdural haematomas (ISDHs) are described. Trauma was the most common cause. Two patients were hydrocephalic and one of them had also agenesis of the corpus callosum. The diagnoses were established by CT. In one of the cases with chronic ISDHs, CT findings suggested a subdural empyema. Conservative treatment was preferred for neurologically stable patients. In one of the patients, the haematoma migrated to the cerebral convexity after liquefaction.
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Pineal meningiomas are very rare. We report a pineal meningioma examined by MRI.
Report of two cases who suffered from lumbo-ischialgia and had as well a disc prolapse as an intrasacral meningocele. The actual clinical symptoms seemed to be caused by the disc prolapse and not by the meningocele, which was considered to be asymptomatic. Therefore only operative treatment of the protruded disc was undertaken. The post-operative course confirmed that this decision was correct. Questions of classification and clinical symptoms of intrasacral meningoceles are shortly discusses.
Brain abscess due to Salmonella species are very rare. In this paper a case of brain abscess caused by Salmonella typhimurium is reported. The patient had no history of Salmonellosis. A review of the literature is also presented.