How common is a brain tumor in the u.s. compared to the same age group in a non-industrialized place?

Maybe higher: It's hard to know for sure, because industrialized countries have better registries and are more likely to keep track of brain tumors. There may be a slightly higher rate of brain tumors in the us compared to a non-industrialized country, but the difference is small. Brain cancers are rare, with about 230, 000 diagnoses worldwide each year. Chemicals, hiv, and radiation are some of the causes.