Procedure prep
Fasting Before Breast Lump Removal
A lumpectomy (also called wide local excision) removes a breast lump along with a small rim of healthy tissue around it. It is usually a day-case operation under general anesthesia, so you go home the same day.
Fasting for this procedure
→ Get your exact fasting times with the calculator
Medicines to check
- Blood thinners (aspirin, clopidogrel, warfarin, Eliquis, Xarelto) — see medications to stop.
- Diabetes medicines & insulin — they need a plan. See diabetes tablets.
- Blood pressure medicines — confirm which to take with a sip of water.
- Estrogen, HRT, or the combined pill — ask your team, as these can raise clot risk and may be paused.
- NSAIDs (ibuprofen, naproxen) and fish-oil or vitamin E supplements — these can increase bleeding and are often stopped a few days before.
- Iron tablets — ask whether to continue; some teams pause them around surgery.
When this surgery may be delayed
- Fever, a new cough/cold, or a chest infection
- Vomiting or diarrhea in the days before
- A positive or unknown pregnancy test (especially important if dye or a tracer is used)
- Eating or drinking outside your fasting window
- An infection or broken skin over the breast area
Reports & documents to carry
- Photo ID and insurance or hospital paperwork
- A list of all your medicines, doses, and allergies
- Recent breast scans or biopsy reports (mammogram, ultrasound, MRI)
- A responsible adult to drive you home and stay with you that night
- Comfortable clothing and a soft, supportive bra to wear home
What to ask your anesthesia team
- Will I have general anesthesia and be fully asleep, or local anesthetic?
- Which of my medicines should I stop, and which do I take with a sip of water?
- Will I need wire, seed, or magnetic-seed localization, or a sentinel lymph-node biopsy?
- When can I eat and drink normally afterward?
- Am I going home the same day, and do I definitely need a driver?
Your prep checklist
Tick things off as you sort them — saved on this device only, nothing is sent anywhere.
A general guide — your hospital's own instructions always come first.
Frequently asked questions
What is wire or seed localization before a lumpectomy?
If the lump cannot be felt by hand, the team marks its exact spot beforehand using one of a few methods: a fine wire, a tiny radioactive seed, or a small magnetic seed, each placed with scan guidance. This simply guides the surgeon straight to the right area so the correct tissue is removed. It is a quick step, and your team will explain which method they are using.
Why might I be given a blue dye or injection?
If a sentinel lymph-node biopsy is planned, a blue dye and/or a radioactive tracer is injected near the breast to find the first lymph node that drains the area, which helps check whether anything has spread. The blue dye can temporarily tint your skin and urine blue or green for a day or two, which is harmless and fades on its own. Allergic reactions to the dye are rare, and your team will ask about any past reactions beforehand.
Will I have to stay overnight in hospital?
Most lumpectomies are day-case, so you arrive, have the operation, recover for a few hours, and go home the same day. Because you have had general anesthesia, you must have a responsible adult drive you home and stay with you overnight. Your team will confirm your plan, as some situations need a longer stay.
Can I drink water on the morning of surgery?
Usually yes, you can have small sips of clear water up to about 2 hours before your arrival time unless your team tells you otherwise. Clear liquids do not include milk, juice with pulp, or anything fizzy and colored. Always follow the exact fasting times your hospital gives you.