Keisha P. Bonner

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We have prepared karyotypes from 22 primitive neuroectodermal tumors (PNETs) from pediatric patients ranging in age from 10 months to 16 years. Twenty-one cases were newly diagnosed, primary, posterior fossa tumors. One case was a recurrent tumor in a patient previously treated with radiation. Cytogenetic results were obtained from direct preparations(More)
High-resolution proton magnetic resonance (MR) spectroscopy was performed on perchlorate extracts of tumors (24 cases) or peritumoral vermis (five cases) obtained at surgery. Fifteen tumors were typical cerebellar astrocytomas and nine were posterior fossa primitive neuroectodermal tumors/medulloblastomas. Spectra obtained from the five samples of(More)
Duodenal neuroendocrine tumors are rare and few studies exist to guide surgical management. This study identifies factors associated with recurrence after resection. A retrospective, single institution review was performed between 1983 and 2011 on patients with a pathologic diagnosis of duodenal neuroendocrine tumor. Tumor grade was assigned based on WHO(More)
OBJECTIVE AND IMPORTANCE Choroid plexus tumors may be extremely vascular, limiting surgical resection. A case of a choroid plexus adenoma is presented in which the argon beam coagulator (System 6500; ConMed Corp., Utica, NY) was used as a surgical adjunct. CLINICAL PRESENTATION A 12-year-old male patient with a giant tumor of the lateral ventricle(More)
Pancreas transplantation can provide insulin independence, improved survival, and improved quality of life for patients with diabetes mellitus. However, there has been a steady decline in the number of pancreas transplants (either alone or with a kidney) performed in the United States over the past decade. This decline has occurred despite a steady increase(More)
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