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OBJECT The authors aimed to develop management strategies for the treatment of herniated thoracic discs and to define indications for selection of surgical approaches. Symptomatic thoracic discs requiring surgery are rare. Between 1971 and 1995, 71 patients with 82 herniated thoracic discs were surgically treated by the authors. The treated group included(More)
Our purpose was to document the incidence and imaging features of cystic meningiomas, to correlate the imaging features of cystic meningiomas with the histopathological findings, and to analyze the surgical implications of the imaging features of cystic meningiomas. The imaging studies, clinical histories, operative findings, and histopathological findings(More)
The authors describe the use of a porous polyethylene Flexblock implant for cosmetic cranioplasty. The implant may be used to cover any small- or medium-sized (< 8 cm) cranial defect, offering similar cosmetic results to standard alloplast cranioplasty while decreasing operation time. The porous implant design permits ingrowth of soft tissue and bone to(More)
A number of operative techniques have been described for the treatment of herniated thoracic discs. The transfacet pedicle-sparing approach allows for complete disc removal with limited spinal column disruption and soft-tissue dissection. Fifteen cadaveric spinal columns were used for evaluation of exposure, development of thoracic microdiscectomy(More)
Remyelination is the generation of new myelin sheaths after injury facilitated by processes of differentiating oligodendrocyte precursor cells (OPCs). Although this repair phenomenon occurs in lesions of multiple sclerosis patients, many lesions fail to completely remyelinate. A number of factors have been identified that contribute to remyelination(More)
OBJECTIVE AND IMPORTANCE Intracranial hemangioendotheliomas are rare lesions, especially in the pediatric age group. Recognizing hemangioendotheliomas as a differential in intracranial tumors of vascular origin is important; complete excision results in a cure, and medical therapy for those lesions that are not resectable produces long-term survival. (More)
The regulation of adhesion molecule expression in malignant gliomas by tumor necrosis factor-alpha (TNF) and soluble TNF receptors (TNFR) was examined in the malignant glioma cell line A-172 and in 2 primary glioblastoma cell cultures (LA-492 and LA-567). A-172 cells expressed only the p55 TNF receptor transcripts and protein. The 2 primary cell cultures(More)
Methylprednisolone (MP) is one of the most widely used neuroprotective drugs in neurosurgery. Our knowledge of its pharmacokinetics in the brain and, in particular, whether it can penetrate the blood-brain barrier (BBB) and act in the brain parenchyma is still limited. In this study, we used a vascular brain perfusion technique in guinea pigs, combined with(More)
A case report of monostotic fibrous dysplasia of the clivus in a postadolescent woman is described. Although fibrous dysplasia of craniofacial structures is well documented, involvement of the clivus has not been reported. Diagnosis by clinical, radiographic, and histopathological features is detailed. Implications for the role of surgery and management are(More)
Levamisole and 5-fluorouracil have now become the standard chemotherapeutic regimen for patients with Stage III colon carcinoma. A case of multifocal inflammatory leukoencephalopathy secondary to levamisole alone or combination of levamisole and 5-fluorouracil is reported. Magnetic resonance imaging with gadolinium demonstrated multifocal contrast-enhancing(More)