Because these cancers are relatively rare.

Accumulated CT radiation dose triples pediatric malignancy risk By Lynda Williams The usage of computed tomography scans should be minimized in kids, recommend researchers who’ve found a increased risk for malignancy with repeated imaging significantly. ‘Because these cancers are relatively rare, the cumulative complete risks are little,’ say Tag Pearce and co-authors, who estimate that over 10 years one excess case of brain and leukemia tumor each will occur per 10,000 head CT scans performed in patients aged less than a decade. However, they emphasize in The Lancet: ‘Although medical benefits should outweigh the tiny absolute risks, radiation doses from CT scans ought to be kept as low as alternative and possible techniques, which do not involve ionising radiation, is highly recommended if suitable.’ Related StoriesNew RNA check of blood platelets can be used to identify area of cancerCornell biomedical engineers develop 'super natural killer cells' to destroy tumor cells in lymph nodesSausages With Antioxidants From Berries To Prevent CancerThe team collated cancers incidence and mortality data for individuals aged under 22 years who underwent CT imaging in National Wellness Program centers in England, Wales, and Scotland between 1985 and 2002.During long-term follow-up, 171 of the 1818 patients crossed more than from ICD therapy by itself to CRT-D therapy, and 92 crossed more than from CRT-D to ICD therapy only. Individuals who crossed over from ICD to CRT-D therapy had several baseline characteristics that place them at higher risk than those who crossed over from CRT-D to ICD or those that did not cross, including a higher serum creatinine level, a lower ejection fraction, and larger still left ventricular volumes. The curves diverge at 12 months and continue to have split paths thereafter, with considerably lower mortality among individuals randomly assigned to CRT-D therapy than among those randomly assigned to ICD therapy by itself .