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| | eMedicine - Childhood Cancer, Epidemiology : Article by Gary M Kupfer, MD |
 | | Leukemias account for approximately 25% of all childhood cancers, followed by tumors of the CNS (17%), neuroblastoma (7%), non-Hodgkin lymphoma (NHL) (6%), Wilms tumor (6%), Hodgkin disease (5%), rhabdomyosarcoma (3%), retinoblastoma (3%), osteosarcoma (3%), and Ewing sarcoma (2%). |
 | | Leukemias are the most common type of childhood cancer, accounting for 34% of new diagnoses. |
 | | Defects in ras guanosine triphosphatase (GTPase), termed neurofibromin, are sporadic in at least one half of the cases of NF detectable in the general population. |
| www.emedicine.com /ped/topic2585.htm (5270 words) |
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