Primary brain tumors usually form in the central nervous system and do not always spread to other parts of the body. To treat these tumors, doctors classify them based on the type of cell in which the tumor started, the location of the tumor in the brain, and the grade of the tumor.
Here is a list of some different types of primary brain tumors that occur in adults:
The tumor is usually high-grade, meaning it spreads very quickly and is difficult to treat.
o Astrocytic pineal tumor: This type of tumor occurs in or near the pineal gland. This gland is responsible for the production of the hormone melatonin which regulates our sleep and waking patterns. This tumor can be of any grade.
o Pyelocytic astrocytoma: This tumor is a grade I tumor and develops into brain cells called astrocytes. The tumor grows slowly and rarely spreads to neighboring tissues of the brain. Tumors can be cured and are most often seen in children and young adults.
o Diffuse astrocytoma: This is another tumor that develops into astrocytes. It grows slowly and has a tendency to spread to neighboring brain cells. It is a grade II tumor seen mainly in young adults.
o Anaplastic astrocytoma: This tumor is also called malignant astrocytoma and it grows very fast and spreads to nearby brain cells. Cancer cells look different from normal cells and develop mainly when a person reaches 40 years of age. It is a grade III brain tumor.
o Glioblastoma: It is one of the most aggressive brain tumors and is classified as a grade IV brain tumor. It is commonly known as glioblastoma multiforme and is usually fatal. It is very difficult to treat and mainly occurs in adults between 45 and 70 years of age.
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