Marker Coil Placement

If you are having breast-conserving surgery to remove a small tumour - you may need a marker coil placed beforehand. This video explains what a marker coil is, why it is used, and what to expect during and after the procedure. Breast-conserving surgery, sometimes called a wide local excision or lumpectomy - removes the cancer while keeping as much healthy breast tissue as possible. I remove the tumour along with a small margin of normal tissue around it. A marker coil helps me locate the tumour accurately during your operation. In the past - we used thin wires to mark the tumour. These had to be inserted on the morning of surgery, which could cause delays. The wire also sometimes entered the breast from an awkward angle. Modern precision marker coils have changed this, making the process simpler and more comfortable for patients. The marker coil is placed in the radiology department, usually days or weeks before your surgery. This means that on the day of your operation, there is less waiting and the procedure can begin at the scheduled time. The coil stays safely in place until I remove it along with the tumour. The placement procedure is very similar to having a breast biopsy. A radiologist uses ultrasound or mammogram imaging to guide a small needle to the exact location of the tumour. Local anaesthetic numbs the area first, so you should not feel pain during the procedure. Once the needle is in the correct position, the marker coil is gently released into the breast tissue. Unlike a biopsy - there is no need for multiple needle passes. The coil is simply deployed and left in place. A check mammogram or X-ray confirms the marker is sitting in the right area. The side effects are usually mild - You may experience some discomfort and bruising around the area. To help with this, take regular paracetamol if needed and wear a soft, supportive bra for comfort. Also - please avoid getting the area wet, for twenty-four hours after the procedure. If you have any questions about marker coil placement or your upcoming surgery, please speak to your breast-care nurse or surgical team. We are here to support you at every step of your treatment journey. Thank-you for watching.