The Critical Role of Biopsy Markers and Localization
A hallmark of modern biopsy protocol is the placement of a tiny metallic marker, or "clip," at the site of the tissue removal. This marker, usually made of titanium or stainless steel, is roughly the size of a grain of rice and is designed to remain in the breast permanently.
The marker serves as a permanent landmark for several reasons:
Target Verification: A post-procedure mammogram confirms that the samples were taken from the correct area.
Future Tracking: If the biopsy is benign, the clip allows radiologists to monitor the exact spot during future mammograms to ensure no changes occur.
Surgical Guidance: If the biopsy reveals cancer, the marker guides the surgeon to the exact tumor site for a lumpectomy, particularly if the original mass was small or was largely removed during the biopsy itself.