Aftercare following a breast biopsy

Mild soreness, bruising, and a small firm area can follow needle sampling. Your discharge instructions take priority because care differs according to the biopsy method, the dressing used, and whether stitches were placed.

A bruise may spread or change colour as it resolves. A small lump can represent local swelling or collected blood. Tenderness should become easier rather than intensify, and the dressing should not repeatedly fill with fresh blood.

A biopsy identifies the cells or tissue in the sampled area. Being sent for biopsy does not by itself establish a cancer diagnosis; the laboratory result determines what was found and whether further care is needed.

Keep the dressing clean and dry for the period specified by the biopsy team. Wear a comfortable supportive bra if advised, and use a wrapped cold pack for short intervals without placing ice directly on skin. Take only pain relief approved for you.

Avoid vigorous upper-body exercise, heavy lifting, and swimming until the team says they are suitable. If you take a blood thinner, follow the exact restart instructions rather than changing the dose independently. Keep the result appointment even when the skin looks healed.

Apply firm, steady pressure as instructed if the site bleeds. Seek urgent help if bleeding does not stop, the breast rapidly enlarges, you feel faint, or you develop breathing difficulty or a severe reaction such as facial swelling.

Contact the biopsy service for increasing pain, spreading redness or warmth, pus, fever, wound opening, or a swelling that continues to grow. Also contact the team if the dressing comes off early and you are unsure how to replace it.

Before leaving, confirm when you may shower, remove the dressing, resume exercise, and restart any paused medicines. Ask how results will be delivered, who to contact outside clinic hours, and whether a marker clip was placed.