Which ONE of the following forms a cystic tumour mass in the cerebellum in children?

The answer is A. Cerebellar astrocytomas in children are usually cystic.

Glioblastoma multiforme (C) is an anaplastic astrocytoma which occurs in the cerebral hemisphere of adults.

Medulloblastoma (E) is derived from nerve cells and occurs in the cerebellum of children; it is not usually cystic.

Haemangioblastoma (D) is a tumour of blood vessels and occurs usually in the cerebellum.