Cancer stem cells (CSCs) have been identified in hematopoietic and solid tumors. However, their precursors-namely, precancerous stem cells (pCSCs) -have not been characterized. Here we experimentally define the pCSCs that have the potential for both benign and malignant differentiation, depending on environmental cues.
View Article and Find Full Text PDFPurpose: To review interpathologist diagnosis variability and survival of children treated for either anaplastic mixed glioma (AMG) or anaplastic oligodendroglioma (AO) with surgery, irradiation and chemotherapy.
Patients And Methods: Two hundred and fifty patients with an institutional diagnosis of malignant glioma were enrolled on Children's Cancer Group CCG-945 between 1985 and 1991, and administered vincristine during involved field radiotherapy, then six cycles of prednisone, lomustine and, vincristine; or two cycles of "eight-drugs-in-one-day" (8-in-1) chemotherapy then involved-field radiotherapy followed by six cycles of 8-in-1 chemotherapy. Central review of institutional pathology was post hoc by five experienced neuropathologists.
Background: The objectives of the current study were to determine the outcome of children who were treated with chemotherapy and radiotherapy on the Children's Cancer Group (CCG) high-grade glioma protocol (CCG-945) who were diagnosed with low-grade gliomas on post hoc central pathologic review and to identify clinical and biologic features associated with prognosis.
Methods: Between 1985 and 1991, 250 children with institutionally classified high-grade gliomas were enrolled on CCG-945. Patients older than 24 months with intracranial lesions were assigned randomly to receive either lomustine, vincristine, and prednisone (control regimen) or the 8-drugs-in-1-day regimen (experimental regimen); younger patients and those with primary spinal cord tumors were assigned nonrandomly to the experimental regimen.