Paul Steinbok

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OBJECTIVE Forty percent of standard cerebrospinal fluid shunts implanted for the treatment of pediatric hydrocephalus fail within the first year. Two new shunt valves designed to limit excess flow, particularly in upright positions, were studied to compare treatment failure rates with those for standard differential-pressure valves. METHODS Three(More)
Reports of cytogenetic abnormalities in pediatric central nervous system (CNS) tumors are important for collection and comparison of large numbers of karyotypes of primary CNS neoplasms to produce statistically significant correlations. We report cytogenetic results of 119 samples of pediatric CNS tumors from 109 patients. Tumors included 33 low-grade(More)
PURPOSE To describe seizure control, complications, adaptive function and language skills following hemispheric surgery for epilepsy. METHODS Retrospective chart review of patients who underwent hemispheric surgery from July 1993 to June 2004 with a minimum follow-up of 12 months. RESULTS The study population comprised 24 children, median age at seizure(More)
The treatment of positional plagiocephaly is controversial. A confounding factor is the lack of a proven clinically viable measure to quantify severity and change in plagiocephaly. The use of anthropometric measurements is one proposed method. In this study, the reliability and validity for this method of measurement were investigated. Two clinicians(More)
The classification and embryogenesis of cystic cervical dysraphic lesions are discussed in the light of the authors' experience and review of the literature. It is felt that these lesions are best described as meningoceles or myelocystoceles, and the use of the term 'myelomeningocele' may be more confusing than clarifying. The authors hypothesize that the(More)
INTRODUCTION Tethering is assumed to be the primary cause of deterioration seen in children with transitional lipomyelomeningocele as they age. The inevitability of deterioration has led to recommendations for prophylactic interventions to stabilize or prevent further clinical deterioration. OBJECTIVE Determine the frequency and patterns of functional(More)
A retrospective analysis of data collected prospectively was performed to determine the long-term outcome of lumbosacral selective posterior rhizotomy (SPR) in children with spastic cerebral palsy (CP). The study population comprised children with spastic CP, who had SPR more than 4 years prior to the time of the study and had quantitative standardized(More)
Choroid plexus tumors are uncommon neoplasms of the central nervous system. A series of 11 cases from the Vancouver General and British Columbia Children's Hospitals, treated during the last 12 years, are reviewed. Some of the management problems commonly encountered with these tumors are discussed. Many of these tumors are associated with severe(More)
OBJECTIVE The purpose of this study was to determine whether routine cerebrospinal fluid (CSF) bacteriological cultures in patients with external ventricular drains (EVDs) can identify infections early and prevent complications related to bacterial ventriculitis. METHODS We retrospectively reviewed the microbiological reports and clinical data for all(More)