Who is at risk for developing astrocytomas?
Who is at risk for developing astrocytomas?
The average annual age-adjusted incidence rate for tumors of neuroepithelial tissue (which includes astrocytomas) is 6.6 per 100,000, according to figures from the Central Brain Tumor Registry of the United States in 2016.
Most cases of pilocytic astrocytomas are diagnosed by the age of 20. About 1,200 people younger than 19 in the United States will have an astrocytoma diagnosis. The 20-45 year age group accounts for about 60% of all low-grade astrocytoma diagnoses. A genetic component has been found in some cases. Males are only slightly more likely to develop astrocytomas than females.
Glioblastomas are often found when people are in their 50s and 60s. The number of U.S. diagnoses is estimated at 10,000 cases per year.