Christopher Alan Rokes

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BACKGROUND The repressor element-1 silencing transcription factor (REST) is a repressor of neuronal genes. Its expression is associated with poor neuronal differentiation in many neuroblastoma patient samples and cell lines. Because retinoic acid promotes neuronal differentiation, the authors postulated that it involves modulation of REST expression. (More)
SUMMARY Spinal glioblastoma multiforme (GBM) is rare in children. New therapeutic options should be explored given the poor outcomes reported. We describe the case of an infant with spinal GBM whose condition worsened despite radiotherapy and chemotherapy. Immunohistochemical analysis of the tumor sample showed activation of the Raf-MEK-ERK pathway.(More)
Meningioangiomatosis (MA) is an uncommon brain tumor. The role of imaging techniques is underscored in cases where the tumor location makes resection (or even biopsy) dangerous. We report the case of a child with an MA tumor located deep in the right sylvian fissure. A computed tomography (CT) scan showed calcifications in a highly vascular lesion with(More)
Histoplasmosis is an endemic fungus in several regions of the United States. The diagnosis and treatment of this infection can be challenging in pediatric oncology patients. We present 5 patients diagnosed with histoplasmosis while receiving treatment at a midsize pediatric oncology center in Iowa. Two cases occurred in patients with acute lymphoblastic(More)
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