Article:
Astrocytoma is a brain tumor that develops from astrocytes and glia. Astrocytes and glia are cells present in nervous tissue other than neurons. Unlike neurons, they retain the ability to undergo mitotic division.
In humans, all stages of the development of a malignant tumor are observed - from a slowly growing tumor, the cells of which in their structure resemble ordinary glial cells, to a rapidly growing tumor with a high degree of damage, the cellular structure of which is poorly defined (see glioblastoma).
In adults, astrocytomas are usually found in the cerebral hemispheres. In children they can also develop in the cerebellum.
Astrocytoma is a brain tumor that develops from astrocytes and glia. Astrocytes and glia are cells present in nervous tissue in addition to neurons. Unlike neurons, these cells retain the ability to undergo mitotic division.
In humans, different stages of development of malignant astrocytoma are observed. In the initial stages, the tumor grows slowly, and its cells resemble ordinary glial cells in structure. In later stages, the tumor can grow very quickly, and its cellular structure becomes difficult to determine. This form is called glioblastoma.
In adults, astrocytomas are most often found in the cerebral hemispheres. In children, these tumors can also develop in the cerebellum.