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PURPOSE To present the imaging, metabolic, and clinical data obtained in five patients with juvenile pilocytic astrocytomas (JPAs) and discuss the paradoxical neuroimaging findings. MATERIALS AND METHODS Five patients with JPAs who had undergone structural imaging and fluorine-18 fluorodeoxyglucose (FDG) positron emission tomography (PET) were studied.… (More)
A case of retroauricular melanoma is presented, and the literature on auricular melanoma is reviewed. A method of ear preservation in the surgical treatment of auricular melanoma is discussed.
Diphenylhydantoin is one of the most widely used anticonvulsant agents in humans. To examine its effects on brain metabolism, we used the quantitative autoradiographic [14C]deoxyglucose method to measure local cerebral glucose utilization in adult rats receiving 50 mg/kg/day diphenylhydantoin for 1 week. Thirty-three brain structures were analyzed to… (More)
Peripheral benzodiazepine receptors (PBR) are increased in gliomas and augmented glucose metabolism is seen in malignant brain tumors. We investigated the relationship between PBR density (Bmax) and glucose utilization rate (GUR) in 17 patients with cerebral gliomas of different grades. PBR Bmax was assessed by [3H]PK-11195 in vitro binding in surgical… (More)
A 2007 study indicated severity of violence of several behaviors can be rated consistently, such that an individual's average rating across the behaviors can serve as a measure of sensitivity to violence. However, violence-sensitive and violence-tolerant raters in that study gave similar high scale ratings of severity of violence for extremely violent… (More)