Astrocytoma is a type of brain tumor that originates from astrocytes, the star-shaped glial cells in the brain and spinal cord that support and nourish neurons. Astrocytomas are part of a broader category known as gliomas and are classified based on their grade (I to IV), which reflects how fast the tumor grows and how likely it is to spread.
Grade I (Pilocytic Astrocytoma): Typically benign and slow-growing, often seen in children.
Grade II (Diffuse Astrocytoma): Infiltrative, slow-growing but may progress.
Grade III (Anaplastic Astrocytoma): Malignant, faster-growing.
Grade IV (Glioblastoma): Most aggressive form.
