Clip Insertion (Tissue Marker Placement)

A clip insertion, sometimes called a tissue marker placement, is a small and routine step that is often performed as part of a breast biopsy.

During the procedure, your doctor places a tiny metal marker (about the size of a sesame seed) into the breast at the exact area where the biopsy was taken. This marker helps us find the same spot again in the future if needed.

The marker is often placed at the time of biopsy, but not always. In some cases, it may be inserted as a separate procedure if needed for further imaging, monitoring, or treatment planning.

The marker allows your care team to clearly identify the area on future scans, helps guide any treatment or surgery if required, and ensures that the correct location can still be seen even if the abnormal tissue has been removed or changes over time.

When placed during a biopsy, the clip is inserted using the same needle, so it does not usually add any extra discomfort or time to the procedure. Imaging such as ultrasound or mammography is used to guide accurate placement.

The marker itself is very small and made of materials that are safe for the body, including during MRI scans. It stays in place and does not move around, and most people cannot feel it at all. In most cases, it is left in the breast permanently. If you need surgery later, the marker may be removed along with the surrounding tissue.

If you have any questions or concerns, your care team will be happy to talk you through the procedure and what to expect.

A tiny clip, no bigger than a seed,
Placed with care where doctors need.

During your biopsy — often, not always —
It marks the spot for future days.

If things change or shrink or go,
That little marker still will show.

It doesn’t move, it doesn’t roam,
It simply sits and calls it “home.”

You won’t feel it, it won’t complain,
Just quietly helping your care team explain.

A small reminder, safe and true —
A little pin, looking out for you.

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