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Astrocytic tumors are primary central nervous system tumors that either arises from astrocytes or appear similar to astrocytes on histology having arisen from precursor cells. They are the most common tumors arising from glial cells and can be broadly divided into three groups:
- diffuse, adult-type
- diffuse, pediatric type
These can further be divided into individual entities (as described in the WHO classification of CNS tumor, 5th edition, 2021) many of which are molecularly defined 3.
- adult-type diffuse astrocytic gliomas
- pediatric-type low-grade astrocytic gliomas
- pediatric-type high-grade astrocytic gliomas
- circumscribed astrocytic gliomas
Additionally, some tumors also contain astrocytic components, and it is often this component that dictated biological behavior. Examples include:
Most of these tumors have strikingly differing demographics, imaging appearances, treatment and prognosis and thus they are, along with spinal astrocytomas discussed separately.
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