Brain tumors are categorized into several types, based on the cells from which they originate and their behavior. The main types of brain tumors are:
Primary brain tumors: These tumors originate in the brain, as opposed to secondary brain tumors, which are cancers that have spread to the brain from other parts of the body. The most common types of primary brain tumors are:
- Gliomas: These tumors begin in the glial cells that support the nerve cells in the brain. The most common types of gliomas are astrocytomas, oligodendrogliomas, and ependymomas.
- Meningiomas: These tumors arise in the meninges, the layers of tissue that cover the brain and spinal cord. Meningiomas are usually benign, but they can cause symptoms by pressing on the brain or nerves.
- Pituitary tumors: These tumors originate in the pituitary gland, which is located at the base of the brain. They are often benign and may not cause symptoms, but if they grow large enough, they can cause hormonal imbalances and vision problems.
Secondary brain tumors: Also known as metastatic brain tumors, these tumors are caused by cancer that has spread to the brain from another part of the body. The most common types of cancer that spread to the brain are lung, breast, skin and kidney cancer.
Tumor-like conditions: These include brain abscesses, which are infections that form a pus-filled pocket in the brain, and cerebrovascular malformations, which are abnormal blood vessels in the brain. These conditions can cause symptoms similar to those of brain tumors, but they are treated differently.
It’s important to note that brain tumors can range from benign to malignant, and their behavior can also vary. Some brain tumors grow slowly and may not cause any symptoms for a long time, while others can grow quickly and be life-threatening. This is why it’s important to see a healthcare professional if you experience symptoms such as headaches, seizures, or changes in vision or balance.