"As a general rule, brain tumours increase in frequency with age, with individual exceptions (e.g. pilocytic astrocytoma, the vast majority of which are found in young patients), and a number of uncommon tumours found in infancy (see brain tumours of infancy). There are few gender differences, except that as a general rule, gliomas are more frequent in men and meningiomas are more frequent in women."
"There are numerous individual tumour entities which come under the umbrella term "brain tumour" (see WHO Classification of CNS tumours). They can broadly be divided into:"