[Paraspinal arteriovenous malformations with perimedullary venous drainage].

Symptoms of chronic myelopathy in cases of paraspinal arteriovenous malformations are most often related to perimedullary venous drainage. Here, we report on three cases of such malformations that have unique epidural venous drainage. These thoracolumbar lesions manifested as isolated back pain (in two cases) and S1 lumboradicular pain (in one case).

[Primary brain stem hemorrhage: retrospective study of 25 cases].

Introduction: We report a retrospective series of 25 cases of brain stem hemorrhage.

Methods: Cases of spontaneous hemorrhage of the brain stem which were observed from 1990 to 2000 in a department of neurology were reviewed. Etiological factors, CT scan at admission, clinical signs and the course of the disease were analyzed retrospectively.

[Diffusion-weighted MRI in sporadic Creutzfeldt-Jakob disease].

Conventional MRI with T1, T2 and FLAIR sequences has an important role for the diagnosis of Creutzfeldt-Jakob disease, but the usual examination does not exclude the disease. The objective of this study is to report on the role of diffusion-weighted imaging (DWI) in the diagnostic strategy. From 2002 to 2006, four patients with a suspected diagnosis of sporadic Creutzfeldt-Jakob disease, which was retrospectively confirmed, underwent DWI.

[Can multislice helical computed tomography replace conventional angiography in the diagnosis of non traumatic subarachnoid hemorrhage?].

Aim Of The Study: To evaluate the reliability of CT angiography in the diagnosis of non traumatic subarachnoid hemorrhage.

Materials And Methods: We prospectively studied 57 patients presenting with non traumatic subarachnoid hemorrhage. In all cases, CT angiography of the circle of Willis was performed, followed by conventional angiography.

In vitro evaluation of 2D-digital subtraction angiography versus 3D-time-of-flight in assessment of intracranial cerebral aneurysm filling after endovascular therapy.

Background And Purpose: The aim of this study was to evaluate 2D-digital subtraction angiographic (DSA) and 3D-time-of-flight (TOF) MR imaging in assessment of aneurysmal residue by using a pulsating silicon aneurysm model. For each imaging system, we studied intra- and interobserver reproducibility and the agreement between interpretations and reference measurements. We also examined how each imaging technique affected the operator's therapeutic decision.

[Acutely ruptured intracranial aneurysms treated with GDC coils. Results from a single center over a period of 5 years].

Purpose: We prospectively reviewed the clinical results of acutely ruptured cerebral aneurysms treated with GDC over a 5 year period, in order to characterize death and dependency factors.

Methods: Between 1997 and 2002, 229 patients (254 aneurysms treated, 140 females, 89 males; mean age: 51 years) with aneurysmal subarachnoid hemorrhage were treated with GDC (Boston Scientific Neurovascular, Fremont, CA) once the anatomical conditions of feasibility had been achieved. Over 90% of the aneurysms treated (mean size: 5,8 mm) were located in the anterior circulation.

[Neurotrichinosis: a case report with MRI evaluation].

Neurological complications are rare in trichinosis. A case of trichinosis involving the central nervous system documented by MRI is presented. To our knowledge, only three cases of neurotrichinosis with MRI abnormalities have been already reported.

Monitoring sodium methohexital distribution with [99mTc]HMPAO with single photon emission computed tomography during Wada test.

Twenty-five consecutive patients being considered for surgery for intractable epilepsy had intracarotid sodium methohexital procedures (ISM) as part of their evaluation. The lipophilic brain SPECT agent, [99mTc]hexamethylpropylene aminoxime (HMPAO), was administered intravenously during the procedure to determine the intracerebral distribution of methohexital. The validity of the ISM depends on consistent delivery of the anesthetizing agent to one hemisphere, including the mesial structures of the temporal lobe.

Lambdoid craniosynostosis. A 3D-computerized tomographic approach.

From a series of eleven children aged from 4 months to eight years presenting with a parieto-occipital flattening that was unilateral in nine and bilateral in two, we attempted to determine a 3D-CT semeiology able to demonstrate the presence of a lambdoid suture synostosis, as well as the participation of coronal and lambdoid sutures in the genesis of complex cranial malformations. Pure isolated forms of lambdoid synostosis are rare and justify a surgical treatment for cosmetic purposes if the deformation is severe and progressive.

[Diagnosis by Doppler color echography of dural carotid-cavernous fistula of ophthalmological manifestation].

The case reported here, concerns a spontaneous low-flow fistula between the external carotid arterial network and the cavernous sinus, with ophthalmological symptoms (exophthalmos, red eye) in an old woman with cardiac failure. The shunt was diagnosed by color-Doppler-imaging, which showed a flow reversal with a systolic component in the superior and inferior enlarged ophthalmic veins. This finding led the authors to extend the arterial filling sequence since the shunt was not detectable on standard arterial views.

[Oculomotor nerve paralysis secondary to dural carotido-cavernous sinus fistula].

Carotid-cavernous sinus fistulas are an uncommon cause of oculomotor nerve palsies. These fistulas are fed by meningeal branches of the internal carotid and/or external carotid arteries. They occur spontaneously, and have symptoms less severe than those of direct carotid-cavernous sinus fistulas.

[Post-radiotherapy brain lesions].

Recurrent symptoms or signs during or after therapeutic brain irradiation may be due to the progression of the irradiated tumour, necrosis of normal brain tissue, necrosis of tumour, or all three of these. We have studied 12 patients with pathologically proven radiation-induced damage of normal brain tissue. All patients were exposed to a therapeutic range of radiation for an intra or extracranial tumour.

Possible influence of cerebrospinal fluid pressure on the growth of a third ventricle choroid plexus papilloma.

A case of histologically proven benign choroid plexus papilloma of the third ventricle in a 4-month-old male child is reported. The clinical symptoms and the neuroradiologic findings were those of a supratentorial hydrocephalus. A shunting procedure was performed after refusal by the family of a direct surgical approach.

[Chance's fracture].

Described by Chance (1948) this fracture is induced by a mechanism of flexion distraction (seat belt fracture). The injury is characterized by the following (W.S.

[Scoliotic malformations with or without associated occult spinal dysraphia. A study in 82 children. Current radiological techniques, indications and findings].

The possible association of spinal dysraphia with scoliotic malformations was studied in 82 children. Scoliotic malformations are not always the result of dysraphic malformations (diastematomyelia, hydromyelia, intrathecal lipoma, medullary cone ectopia). Recognition of dysraphic scoliotic malformations from among other types of scoliotic malformations can be accomplished before myelography by detecting vertebral malformations on standard films and, if necessary, by computed tomography.

[The 2nd saccoradiculography: changes in the post-radiculographic and postoperative radiological morphology (340 cases apropos of 2,292 files)].

A study was made of the files 2292 patients examined by sacco-radiculography with watersoluble contrast medium, of whom 340 had been subjected to a second examination. 284 of these had undergone surgery with good results during the interval between the two examinations. In 56 cases, repeat sacco-radiculography was carried out but no operation performed.