Ellansé Lumps: What to Do When You Feel a Hard Nodule

Three months after your Ellansé, you're washing your face and your finger catches on something hard.

It doesn't really hurt. You can't obviously see it. But you know it's there.

What usually happens next goes one of two ways. Either you search online, panic, and want it gone this week — or you reassure yourself that it's "just the collagen coming in," and let it sit for six months.

Neither is right. Before you decide whether to treat it, you have to know what it actually is.

First, work out which one you're feeling

They all feel "hard." Underneath, they are not the same thing.

Swelling after the injection. A needle went in; tissue swells. This is usually diffuse, spread across an area, and it settles over days to a couple of weeks.

The collagen you were meant to get. Stimulating new collagen is the whole point of Ellansé, so the area feeling firmer than before is expected. The key is that it's even, not a discrete ball, with no palpable edge — and it reads as fuller, not as a bump.

A nodule. Focal, discrete, with an edge you can feel. Sometimes only visible when you look down or make an expression. This one does not go back on its own.

A late-onset lump. Appearing months, sometimes over a year, after the injection. This is the one that gets misread most often — enough time has passed that patients don't connect it to the syringe any more.

Not being able to tell them apart is completely normal. Fingers can't reliably tell them apart — mine included, and that's the point of the next section.

Why Ellansé lumps are harder to deal with

If hyaluronic acid goes wrong, you can dissolve it with hyaluronidase. Ellansé you cannot.

Ellansé is PCL (polycaprolactone). It isn't hyaluronic acid, and there is no enzyme that dissolves it. A lot of people only learn this once something has already gone wrong.

And what it leaves behind, when it does go wrong, is more complex. Ellansé works on two mechanisms — the gel carrier gives you volume immediately, while the PCL microspheres drive collagen growth over the months that follow. So when a lump forms, what's in there is typically residual microspheres wrapped in a capsule of dense new collagen. That structure is firmer than a bolus of HA, and more stubborn than the deposits left by softer stimulators.

The mechanism is covered in how collagen stimulators work and where the risks are; the removal principle is in can Ellansé be removed.

What a revision clinic sees is not the same as an incidence rate

There's something here that's easy to misread, so let me be precise about it.

In the published literature, serious nodules from Ellansé are not common. Most people who have had it will never face this. I want that said plainly, first.

But in my revision clinic, PCL is the single most common source I see — and the hardest, most stubborn, most likely to need physical removal.

Both of those are true at once, because the denominators are different. The literature counts how many people out of everyone injected run into trouble. What I see is: among the people who already have trouble, bad enough that someone has to go in and take it out, how much of it is PCL. A low incidence rate and a high share of the removal caseload can both be true.

The honest caveat: I sit at the end of a referral chain, so my sample is selected by definition — the people it went wrong for walk in; the people it went fine for never do. So this section is not saying Ellansé is dangerous, and it is not telling you to avoid it. It's saying: if you turn out to be one of the few, removal is harder than you'd expect.

One more thing that runs against the common impression: the M formulation is already firm. When the international literature discusses difficult Ellansé removal, it's mostly talking about L and E. On the operating table it doesn't play out that way — with M, the capsule is already substantial and the tissue is meaningfully entangled with it. "I only had M, so it should be easy to sort out" is not a safe assumption. The threshold sits earlier than people think.

The formulation differences are in Ellansé S/M/L/E: how the complications differ.

Ultrasound: you can't choose until you can see

Palpation tells you one thing: something is there. Every other question, fingers cannot answer.

High-resolution ultrasound shows:

• How deep it sits — in the subcutaneous fat, or pressed somewhere deeper
• How big, how widespread — one discrete nodule, or a sheet of material joined together
• Whether a capsule has formed — which decides whether it can ever resolve on its own
• What's next to it — where the vessels and nerves run, and therefore what a safe route in looks like

This step isn't about producing a picture for you to look at. It determines every choice that comes after it: whether watching is reasonable, whether medication has any prospect, whether to remove it, and where to enter if you do.

Our clinic runs on one principle — you can only treat safely what you can see. No blind injecting, no blind aspiration, no blind scraping. With lumps, that goes double.

The ladder: watch, medicate, remove

Worth watching: early post-injection swelling, or firmness that is even, non-discrete, and causing no symptoms. Give those time.

Medication does less than people hope. A steroid injection can soften some nodules temporarily and calm inflammation, but it does not dissolve PCL — the material is still there. And repeated steroid injections cost you something: skin atrophy, thinning, depression, visible telangiectasia. I have seen patients who took a fourth and fifth steroid injection for one lump, and by the time removal was finally on the table, the surrounding tissue quality had already been damaged.

5-FU comes up often too. What it can and cannot do, I've written about in the limits of 5-FU on collagen stimulator lumps.

Removal: once a lump is established, encapsulated, and still there after a round or two of medication, taking it out is the direct route. Ultrasound-guided pinhole extraction removes the material and the capsule physically — no enzyme required. The procedure and recovery are in can Ellansé be removed.

The order matters for one reason: don't start trialling drugs before anyone has actually looked. The cost of trial and error accumulates in the tissue.

Don't wait on any of these

• Redness, swelling, heat, pain (possible infection or biofilm)
• Rapid growth over a short period
• Pressure, restricted expression, visible distortion
• Skin colour change — blanching or a purple tinge

These are not "let's watch it" situations. Come in and let me look.

A lump itself isn't the frightening part. The frightening part is trial and error, run blind, one attempt after another.

Common questions

Will an Ellansé lump go away on its own?

Depends what it is. Early swelling settles. An established, encapsulated nodule usually does not. PCL does degrade over time (roughly one to four years depending on formulation) — but the collagen capsule around it often outlasts it, and the lump stays. "Wait for it to degrade" is not a reliable plan.

How long after injection is a lump still normal?

Swelling in the first week or two is expected. Something that appears months later, discrete, with a palpable edge, isn't "still settling." Come and have it looked at.

Can I press or massage it out?

Don't work on it yourself. An encapsulated nodule won't disperse, and forcing it can inflame the surrounding tissue. There are situations where I'll show a patient how to massage — but that's individual advice after examining it, not a general rule.

Will steroids leave a dent?

That risk is real, and it accumulates with repeated injections: atrophy, thinning, depression, visible vessels. It's exactly why I don't recommend leaning on steroids indefinitely.

Does it have to come out?

Not necessarily. A lump with no symptoms, invisible from the outside, with no active inflammation on ultrasound, is reasonable to monitor. The decision comes from two things together — whether it bothers you, and what the ultrasound shows. Feeling something is not by itself a reason to operate.

Will the area be hollow after removal?

Once material is taken out, that area looking flatter is an expected change. Tissue needs time to remodel, and if volume is wanted afterwards, it can be restored later with a reversible material.

Further reading

• Can Ellansé be removed? Ultrasound-guided pinhole extraction
• Ellansé S/M/L/E: how the complications differ
• The limits of 5-FU on collagen stimulator lumps
• How collagen stimulators work and where the risks are

About the author

Dr. Ta-Ju Liu

Director of Liusmed Clinic. Over 15 years of clinical experience in minimal-incision surgery; board-certified dermatologist. Specialises in ultrasound-guided filler removal and the repair of aesthetic complications.

Related specialties

• Filler revision
• Aesthetic complication repair