What is the Difference Between Astrocytoma and Glioblastoma?

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Astrocytoma and glioblastoma are both types of brain tumors that arise from the glial cells, which are the supportive tissue of the brain. The main difference between them is their grade, which determines the level of aggressiveness and the treatment options available.

Astrocytoma:

  • Develops from astrocytes, a type of glial cell.
  • Astrocytomas are classified as IDH mutant, meaning they have a specific genetic mutation.
  • There are three grades of IDH-mutated astrocytomas, ranging from grade 2 (diffuse) to grade 3 (anaplastic).
  • Astrocytomas are a common type of brain tumor in both adults and children.

Glioblastoma:

  • Glioblastoma, also known as glioblastoma multiforme, is the most aggressive astrocytoma.
  • It is classified as a grade IV astrocytoma.
  • Glioblastomas are treated with a combination of surgery, radiotherapy, and chemotherapy.

In summary, astrocytomas are brain tumors that develop from astrocytes and have different grades, while glioblastomas are the most aggressive type of astrocytoma, classified as a grade IV astrocytoma.

Comparative Table: Astrocytoma vs Glioblastoma

Glioblastoma and anaplastic astrocytoma are two of the most common primary brain tumors in adults, with glioblastoma being the more aggressive of the two. Here is a table comparing the differences between the two:

Feature Astrocytoma Glioblastoma
Cancer Grade Grade III Grade IV
Anaplastic? Yes (Anaplastic Astrocytoma) No
Subgroup Astrocytoma Multiforme
Median Survival 10.3 months for patients with KPS ≥ 70, 5.3 months for patients with KPS < 70 Overall median survival is 13.7 months

Both tumors are relatively aggressive, but glioblastoma is considered to be faster-growing and more malignant than anaplastic astrocytoma. Researchers are constantly exploring new treatment options for these brain tumors, including gene therapy and other targeted treatments.