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Neuroblastoma comprises 6–10% of all childhood cancers, and 15% of cancer deaths in children. The annual mortality rate is 10 per million children in the 0- to 4-year-old age group, and 4 per million in the 4- to 9-year old age group. [73] The highest number of cases is in the first year of life, and some cases are congenital.
It affects a little over 600 children per year in the United States. Most are diagnosed with stage IV disease, the most advanced form. Even with aggressive therapy, stage IV neuroblastoma carries a poor prognosis, with a three-year survival rate of 30–40%. [7] Compared with other types of cancer, neuroblastoma is rare.
This is an accepted version of this page This is the latest accepted revision, reviewed on 28 January 2025. Neoplasm in the brain Medical condition Brain tumor Other names Intracranial neoplasm, brain tumour, brain cancer Brain metastasis in the right cerebral hemisphere from lung cancer, shown on magnetic resonance imaging Specialty Neurosurgery, neuro-oncology Symptoms Vary depending on the ...
By irradiating batches of cells with different doses and types of radiation, a relationship between dose and the fraction of cells that die can be found, and then used to find the doses corresponding to some common survival rate. The ratio of these doses is the RBE of R.
Patients diagnosed with a medulloblastoma or PNET are 50 times more likely to die than a matched member of the general population. A population-based (SEER) 5-year relative survival rates indicated 69% overall: 72% in children (1–9 years) and 67% in adults (20+ years). The 20-year survival rate is 51% in children.
An example of a Kaplan–Meier plot for two conditions associated with patient survival. The Kaplan–Meier estimator, [1] [2] also known as the product limit estimator, is a non-parametric statistic used to estimate the survival function from lifetime data.
Relative survival of a disease, in survival analysis, is calculated by dividing the overall survival after diagnosis by the survival as observed in a similar population not diagnosed with that disease. A similar population is composed of individuals with at least age and gender similar to those diagnosed with the disease.
The average generation time (G) was 4.23 ± 0.84 d, the division rate per cell unit (r) was 0.25 ± 0.05, and the multiplication factor (V) was 3.49 ± 1.21. SH-SY5Y cells show growth-related parameters that were typical or even superior to many described immortalized tumor-derived cell lines.
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