What is a percutaneous biopsy?
A percutaneous (through the skin) biopsy is a minimally invasive way of taking a small sample of tissue from your body using only a tiny incision. The sample is then examined under a microscope. To ensure accuracy, the radiologist uses ultrasound or CT imaging to guide the needle precisely to the area of concern. This is known as an image-guided biopsy.
Why do I need a percutaneous biopsy?
Scans such as ultrasound or CT may show an abnormal area of tissue, but they cannot always confirm exactly what it is. A biopsy allows us to take a small tissue sample, which provides the most reliable way of making a diagnosis and deciding on the best treatment.
What happens during the procedure?
- You will lie on an X-ray, ultrasound, or CT scanning table in the most suitable position.
- A small needle may be placed in your arm vein so that sedatives or pain relief can be given if needed.
- The area of skin will be cleaned with antiseptic, and sterile drapes may be placed around it.
- Using ultrasound or CT guidance, the radiologist will identify the best point to insert the needle. Local anaesthetic will then be applied to numb the skin.
- The biopsy needle is carefully guided into the abnormal tissue to take a small sample.
Although preparation can take a little time, the actual biopsy itself is very quick, the needle is often in and out before you realise it.