When is chemotherapy recommended for brain tumour?

Brain tumours are a varied group, so chemotherapy is not selected from the scan alone. The pathology report, tumour grade, molecular features, location and amount that surgery removed all influence the plan. Some medicines can reach tumour cells within the brain more effectively than others, and some are delivered by mouth while others are given through a vein. Chemotherapy may be combined with radiotherapy after surgery, used when surgery is unsafe or incomplete, or considered when a tumour grows again. The aim may be to slow growth, preserve brain function and manage symptoms.

Bring a full list of medicines and supplements, including seizure medicines and steroids, because interactions can affect treatment. Your team may check blood counts, kidney and liver function and the results of tissue or molecular testing. Ask how treatment could affect alertness, concentration, balance, driving, work and seizure control. Do not stop anti-seizure medicine or steroids suddenly unless your treating team gives specific instructions.

Get urgent medical help for a first seizure, a seizure lasting longer than usual, new one-sided weakness, trouble speaking, severe headache with vomiting, increasing drowsiness or confusion. During chemotherapy, report fever, repeated vomiting, inability to take medicines or a sudden change in behaviour promptly. Emergency symptoms need assessment even if they improve.

What tumour type and molecular findings guide my treatment? Is chemotherapy planned after surgery, with radiotherapy, or because the tumour has grown again? Which medicines interact with my seizure treatment or steroids, and what neurological changes need urgent help?