Introduction:-
A brain tumor is a growth of cells in the brain or near it. Brain tumors can happen in the brain tissue. Brain tumors also can happen near the brain tissue. Nearby locations include nerves, the pituitary gland, the pineal gland, and the membranes that cover the surface of the brain.Brain tumors can begin in the brain. These are called primary brain tumors. Sometimes, cancer spreads to the brain from other parts of the body. These tumors are secondary brain tumors, also called metastatic brain tumors.Many different types of primary brain tumors exist. Some brain tumors aren’t cancerous.
Types
There are many types of brain tumors. The type of brain tumor is based on the kind of cells that make up the tumor. Special lab tests on the tumor cells can give information about the cells. Your health care team uses this information to figure out the type of brain tumor.
Types of brain tumors include:
- Choroid plexus tumors. Choroid plexus tumors start in cells that make the fluid that surrounds the brain and spinal cord. This fluid is called cerebrospinal fluid. tumors are located in the fluid-filled cavities in the brain, called the ventricles. Choroid plexus carcinoma is the malignant form of this type of brain tumor. It’s more common in children.
- Embryonal tumors. Embryonal tumors begin in cells that are left over from fetal development. The cells, called embryonal cells, stay in the brain after birth. Embryonal tumors are malignant brain tumors that happen most often in babies and young children.
- Germ cell tumors. Germ cell tumors start in reproductive cells, called germ cells, that go on to become the sperm and egg cells. tumor are mostly in the ovaries and testicles. But sometimes they’re in other parts of the body, including the brain.
- Pineal tumors. Pineal tumors start in and around the brain’s pineal gland. The pineal gland is located in the center of the brain. It makes a hormone called melatonin that helps with sleep. Pineal tumors can be benign or malignant. Pineoblastoma is a malignant type of pineal tumor that’s most common in children.
- Nerve tumors. Nerve tumors are growths that happen in and around nerves This benign tumor is located on the main nerve that connects the inner ear to the brain.
- Pituitary tumors. Brain tumors can begin in and around the pituitary gland. This small gland is located near the base of the brain. Most tumors that happen in and around the pituitary gland are benign.that happens near the pituitary gland.
Symptoms
The signs and symptoms of a brain tumor depend on the brain tumor’s size and location. Symptoms also might depend on how fast the brain tumor is growing, which is also called the tumor grade.General signs and symptoms caused by brain tumors may include:
- Headaches that happen more often and seem more severe.
- Headache or pressure in the head that is worse in the morning.
- Headaches that are sometimes described as tension headaches or migraines.
- Nausea or vomiting.
- Eye problems, such as blurry vision, seeing double or losing sight on the sides of your vision.
- Losing feeling or movement in an arm or a leg.
- Trouble with balance.
- Speech problems.
- Feeling very tired.
- Confusion in everyday matters.
- Memory problems.
- Having trouble following simple commands.
- Personality or behavior changes.
- Seizures, especially if there is no history of seizures.
- Hearing problems.
- Dizziness or a sense that the world is spinning, also called vertigo.
- Feeling very hungry and gaining weight
Brain tumors that aren’t cancerous tend to cause symptoms that develop slowly. Noncancerous brain tumors also are called benign brain tumors. They might cause subtle symptoms that you don’t notice at first. The symptoms might get worse over months or years.Cancerous brain tumors cause symptoms that get worse quickly. Cancerous brain tumors also are called brain cancers or malignant brain tumors. They cause symptoms that come on suddenly. They get worse in a matter of days or weeks
Brain tumor symptoms by location
The main part of the brain is called the cerebrum. Brain tumors in different parts of the cerebrum might cause different symptoms.
- Brain tumors in the front of the brain. The frontal lobes are in the front of the brain. They control thinking and movement. Frontal lobe brain tumors might cause balance problems and trouble walking. There might be personality changes, such as forgetfulness and lack of interest in usual activities. Sometimes family members notice that the person with the brain tumor seems different.
- Brain tumors in the middle of the brain. The parietal lobes are in the upper middle part of the brain. They help process information about touch, taste, smell, vision and hearing. Parietal lobe brain tumors can cause problems related to the senses. Examples include vision problems and hearing problems.
- Brain tumors in the back of the brain. The occipital lobes are in the back of the brain. They control vision. Occipital lobe brain tumors can cause vision loss.
- Brain tumors in the lower part of the brain. The temporal lobes are on the sides of the brain. They process memories and senses. Temporal lobe brain tumors can cause memory problems. They might cause someone to see, taste or smell something that isn’t there. Sometimes the taste or smell is unpleasant or unusual