A doctor injects a local anaesthetic into the skin to numb the area. Then they pass a thin needle through the skin into the tumour. The doctor uses a CT scan or ultrasound to guide them to the exact area to take the biopsy from.
After a liver biopsy, you will need to stay in hospital for a couple of hours or sometimes overnight. This is because there is a small risk of bleeding afterwards. The nurses will check you regularly and monitor your blood pressure. You may have some pain in your tummy and right shoulder. Your doctor can prescribe painkillers for you.
There is a small risk of the cancer cells spreading when the doctor removes the biopsy needle. Your specialist will talk this over with you.