How long do surgical drains stay in after a mastectomy?
Usually about a week, and commonly somewhere between five and seven days. The exact day is not set in advance. Your team decides it from the operation you had and from how much fluid the drain collects each day, so it can come out sooner or stay in longer.
That is why nobody can give you a date before surgery. What they can give you is the plan for how the decision will be made, and that is the thing worth asking about before you go home.
The situation you are in also matters, because a mastectomy on its own, a mastectomy with lymph node surgery and a mastectomy with immediate reconstruction are three different recoveries.
| Your operation | What is different about it | What to pin down before you go home |
|---|---|---|
| Mastectomy alone | Usually one drain, and one set of daily readings to keep | Who reviews the record, and where the drain comes out |
| Mastectomy with lymph node surgery | You may go home with two drains rather than one | How to record each bottle separately, and whether both are likely to come out on the same day |
| Mastectomy with immediate reconstruction | The reconstruction forms part of the same drain and follow-up plan, so more than one team may have a say | Which team you contact about the drain, and who makes the removal decision |
The drain pulls fluid away before it can collect
A surgical drain is a thin tube that sits under the skin after the operation, leading out to a small collection bottle. The formal name is a closed-suction wound drain. Its job is to carry away the blood and tissue fluid the body produces while the area heals, rather than letting it gather in the space where the breast tissue used to be.
Gentle suction is what makes it work
The bottle holds a gentle vacuum. That is what draws the fluid down the tube and into the container, and it is why the bottle looks compressed rather than empty.
If the suction seems to have gone, ring your breast care nurse or the specialist breast surgery team rather than trying to fix it yourself. They will tell you what to do with the system safely.
A drain lowers the risk of a seroma without ruling one out
A seroma is a collection of clear or straw-coloured fluid that gathers under the skin after surgery. A drain reduces the chance of one building up, but it does not remove the possibility, and a seroma can still appear after the drain has come out.
Practice varies quite a lot between surgeons on how best to prevent this. Some use stitches that close down the space under the skin so there is less room for fluid to gather. There is no single agreed method.
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Book a ConsultationLiving with a drain at home comes down to one daily job
Plenty of people go home with the drain still in. Your surgeon will want to be satisfied with how you are recovering and with your circumstances at home first, and the removal plan should be agreed before you leave the ward.
The daily job is the record. It is what your team uses to decide when the drain can come out, so it matters more than it looks.
- Measure once a day, at roughly the same time. First thing in the morning is the usual advice. Consistency is what makes the trend readable.
- Keep a separate record for each drain. If you have two, they need their own entries. Combining them hides what each one is doing.
- Note anything that changes. The colour usually shifts from red to pink and then to yellow as you heal, and there is normally very little smell to it.
Ask your team directly about washing, showering and how to sleep with the drain, because the answer depends on your operation, your dressings and the system you have been sent home with. There is no single rule, and it is a fair question to ask before you are discharged rather than working it out on the first evening.
Contact your breast care nurse or the specialist breast surgery team if you notice redness, heat, swelling, more bruising or increasing pain around the area. Ring them too if the system leaks, comes apart, loses its suction, moves a long way, or if you can see the holes in the tube outside the wound.
If the drain falls out altogether, cover the site as you were shown and contact the team. Leave the tube outside the wound and do not try to put it back.
Before you leave hospital, write down three things: who reviews your drain record, where removal happens, and which number to ring if the suction goes at the weekend. That last one is the gap people find at the worst moment.
Ask how removal will be decided, not when
Removal follows the operation, your recovery and the direction your daily readings are heading, so the useful conversation is about criteria rather than dates.
Mr Ghosh sets out before surgery who will be reviewing your drain record, where removal will happen and who to ring from home, so the plan exists before you need it rather than being improvised afterwards.
Before you are discharged, make sure you have answers to these:
- Who reviews the daily readings, and how do they get them?
- Where does removal take place, and do you need an appointment?
- Which number do you ring if something changes at the weekend?
- What symptoms after removal need to be reported?
- What should you do if swelling appears under the skin once the drain is out?
The people who find this stage easiest are not the ones whose drains came out fastest. They are the ones who left hospital knowing exactly who to call.
Measure each drain separately, at the same time each morning. Your team is reading the trend rather than any single figure, and combining two bottles into one number hides what each side is doing.
Common questions about mastectomy drains
Can I go home with a mastectomy drain?
Yes, in many cases. Your surgeon needs to be happy with your recovery and with your arrangements at home, and the review and removal plan should be agreed before you are discharged.
Does it hurt when the drain is removed?
Not usually, though it feels strange. Most people describe a brief pulling sensation as the tube comes out, and it is over in a few seconds. The sensation does vary between people, so tell whoever is removing it if you are finding it uncomfortable.
What happens if the drain stops collecting fluid?
Ring the team. It may simply mean the fluid has slowed down, which is a good sign and often means removal is close. It can also mean the tube is blocked or the suction has been lost, and those need checking rather than waiting.
How much fluid is normal?
There is no single number, and units set their own thresholds rather than working to a national one. What your team is watching is the trend across several days rather than any one reading.
Can a seroma develop after the drain is removed?
Yes. Fluid can still gather under the skin once the drain has gone, and it is common enough that it is worth knowing about rather than being alarmed by. Your team can assess new swelling and drain it if it needs draining.
This is general information, not medical advice.
Reviewed by Mr D. B. Ghosh, Consultant Breast Surgeon, dual European Board certified (FEBS) in Breast Surgery and Surgical Oncology, and Board Certified in Cosmetic Breast Surgery through the Royal College of Surgeons scheme. GMC 4657664.
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