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The literature on the formation of cerebral veins is reviewed to obtain a better understanding of some cerebrovascular anomalies. Clinical observations such as the entry of the superior ophthalmic vein into the cavernous sinus through the inferior rather than the superior orbital fissure, the relative infrequency of middle cerebral vein backflow in the(More)
We report a family with nodular subependymal masses of heterotopic gray matter occurring in six members in four generations. Only female members of the family are affected, and there is a high rate of spontaneous abortion, consistent with X-linked dominant inheritance, and lack of viability in affected males. Both in this family and in sporadic cases of(More)
Synovial cysts are cystic lesions arising from the synovial membrane of diarthrodial joints. They may or may not be continuous with the joint space, and they are usually filled with a mucinous fluid. Clinically, the most frequent presentation is lower back pain without motor or sensory impairment [1 ]. Synovial cysts can present with more classic radicular(More)
Acoustic neuromas larger than 1 cm are usually apparent on routine computed tomography (CT) after contrast enhancement, but smaller lesions escape detection [1, 2]. Metrizamide CT cisternography can demonstrate small lesions, but it is not accurate for the detection of intracanalicular lesions [1, 3]. Pantopaque meatocisternography can detect(More)
BACKGROUND AND PURPOSE Endovascular treatments for aneurysms are being used more frequently in patients in the absence of a large body of information on their histopathological effects. This study determined the efficacy and histopathological effects of treatment of experimental aneurysms with Guglielmi detachable coils (GDC) or cellulose acetate polymer(More)
Three cases of cerebral venous malformation (CVM) are presented to demonstrate the triad that characterizes CVM: abnormal surface venous drainage, a "star-cluster" system of deep collecting veins, and a deep draining vein. Four other cases are introduced that illustrate this triad and show an additional feature, namely arterial fistulization; these cases(More)
Gene expression in the rodent brain is dependent on exercise. However, our findings regarding this fact are inadequate. The aim of this study was to evaluate the effect of exercise intensity on changes in factors involved in neuronal differentiation and plasticity in the hippocampus of adult male rats. Thus, the effects of 2 weeks treadmill running at of(More)
Spontaneous intracerebral hematoma associated with carotid-cavernous fistula is rare. Three new cases are presented. In each, the hemorrhage originated in the vicinity of localized intracranial venous engorgement, as demonstrated by cerebral angiography. Rupture of one or several of the distended venous channels from increased back-flow is postulated as the(More)
Hypoplasia of the carotid arteries is a rare congenital anomaly which when clinically symptomatic presents as cerebral ischemia or hemorrhage. Patients with this anomaly commonly have associated variations of the circle of Willis, an increased incidence of intracranial aneurysms and extensive networks of collateral vessels to accommodate the diminished(More)
Paragangliomas are usually benign tumors which may be locally invasive. Only 10% of these tumors are malignant. When metastases occur the most common sites are lung, liver and bone. When bony metastases occur the spine is a common site. In the present case cervical spine metastases with resultant bony encroachment and epidural extension of tumor with cord(More)