TREATMENT 

In chemotherapy anti cancer drugs are used to treat brain tumours. The most commonly used drugs are vincristine and temozolomide. Vincristine is in form of liquid which is injected into the vein and temozolomide is basically in form of capsules. The dosage of chemotherapy can vary depending on the stage and the condition. Chemotherapy can have various side effects like hair loss, nausea, fatigue, diarrhea, constipation etc.

Radiation therapy uses powerful radiations like X rays, gamma rays which are directed towards the tumour to destroy it. It destroys the cancerous cells so that they loss their ability to grow and divide. It is used very precisely so that the surrounding healthy tissue is not damaged. There are different types of radiation therapies that can be used depending on the size, location, growth rate and various other factors. This can also have various side effects like nausea, headaches, memory loss etc.

Surgery involves the removal of tumour tissue using special instruments. The type of surgery used can depend on size, location and nature of the tumour as well as the age and overall health of the individual. Lesser invasive surgical techniques that causes minimal damage can be performed these include endoscopy or stereotactic surgery. Other technique like the craniotomy involves removal of a piece of the skull in order to access the brain tumour and then removing it. 

Targeted therapy uses highly specific drugs to treat the cancerous tissue by identifying and attacking specific molecules or pathways which the cancer cells are dependent on for their survival. These can include drugs that block the blood supply to the tumour cells, molecules that inhibit tumour cell division or monoclonal antibodies that block the growth signals. Commonly used targeted therapy agents include Bevacizumab and EGFR inhibitors.