Filler granuloma, and only offered surgery? Get assessed first

Filler granuloma, and only offered surgery? Read this before you agree to it

Patients come to Dr Sin Yong after being told that a filler granuloma has to be cut out, or that nothing else can be done. Before you agree to an operation, know what it means:

• A scar. Every cut through the skin of the face heals with a scar.
• A dent. Cutting out a lump takes tissue with it, and the area can heal hollow or uneven.
• Nerve injury. Nerves that give the face feeling and movement run close to where filler sits. An injured nerve can leave numbness, or weakness in a smile, a lip or a brow.
• Product left behind. Filler spread through tissue is hard to remove completely.
• No way back. Tissue that has been cut out cannot be put back.

With a granuloma, product left behind matters most. Granulomas grow finger-like into the tissue around them (Lemperle and Gauthier-Hazan 2009), and because their borders are ill-defined, cutting them out is often incomplete (Lee 2015).

In Dr Sin Yong's practice, almost every hard lump is treated without surgery. If yours is one of the few that needs surgery, you are told plainly, and why. Dr Sin Yong maps each granuloma with ultrasound, treats inflammation or infection medically first, dissolves hyaluronic acid after a skin test, and treats granulomas around material that cannot be dissolved, silicone included, with the Sculpting mode of Time Freeze Laser LCLR®, without an incision. Hard lumps of every kind are covered in hard lumps after filler or skin boosters, and a new lump months or years after filler, before anyone knows what it is, in delayed lumps after filler. This page is about the granuloma itself.

What a filler granuloma is, and how it differs from a lump of filler

A granuloma is the body's immune reaction to something it cannot break down. Inflammatory cells gather around the injected material and wall it off, often with scar tissue, so the area turns firm or lumpy. Doctors call this a foreign-body granuloma. A review describes it as a chronic inflammatory reaction, mainly of large inflammatory cells with several nuclei (multinucleated giant cells), that is not an allergy and can follow any dermal filler; the volume injected, impurities in the product and the filler's physical properties all play a part (Lee 2015).

A lump of filler is different. It is the product itself, gathered in one place or placed too close to the surface, and it is usually noticed soon after the injection. A granuloma is the reaction around the product, and it tends to appear later. The two can sit together in one lump, which is one reason the scan comes first.

Swipe sideways to see the whole table.

“For hard lumps from mixed products, I use one tool, Time Freeze Laser LCLR®, to target the material without surgery.”

Dr Sin YongOn hard lumps from mixed fillers and skin boosters

Which fillers cause granulomas? Any of them, hyaluronic acid included

Any injected filler can cause a granuloma (Lee 2015). A review notes that true granulomas are not in themselves more frequent with non-absorbable fillers than with temporary ones (Lemperle 2009). In an international ultrasound study of 240 granulomas after cosmetic fillers, half followed hyaluronic acid (Wortsman 2025). In a systematic review of 117 patients with granulomas after collagen-stimulating fillers, the authors note that every collagen stimulator studied can cause them, with longer delays and more reports for fillers that do not break down (Wang 2025).

Swipe sideways to see the whole table.

The percentages describe the granulomas each study collected, not the risk with any one product. Unknown or mixed material is common after treatments done years ago or overseas, which is one more reason the scan comes first. Where several products sit together, the hyaluronic acid part is dissolved and what remains is treated with the Sculpting mode, in a planned order.

When a granuloma appears after filler treatment, and the signs

A granuloma rarely appears straight after the injection. A review puts true foreign-body granulomas at about 1 in 100 to 1 in 5,000 patients and describes them appearing months to years after injection, at all treated sites at the same time (Lemperle 2009). In the systematic review of granulomas after collagen stimulators, they appeared from 1 week to 15 years after injection, on average about 20 months, usually as nodules and most often around the mouth (Wang 2025). Delayed lip granulomas appeared on average 35.2 months after treatment (Trinh, Surg J 2022).

Signs of a filler granuloma

• A firm lump, or several, where filler was placed, often long after the treatment.
• A lump that grows rather than settles.
• A lump that comes and goes, swelling and then easing.
• A lump that flares red, warm or tender.
• Lumps at several treated sites at the same time.

A flare can follow an infection: a treatment review notes that most patients have one episode, often set off by a bacterial infection elsewhere in the body (Lemperle and Gauthier-Hazan 2009).

A lump that keeps coming back after filler

A granuloma forms around material the body cannot clear, and material left behind can keep the reaction going. Authors who operated on silicone chin granulomas state that silicone residues cause a high rate of recurrence: the granulomas came back in 44.4% of patients who had surgery alone and in 5.89% of those who also had medical treatment (Harlim 2026). A lump that keeps coming back after filler, after dissolving or after an operation needs a scan to show what it is, not more filler and not another guess.

Ultrasound first, and sometimes a tissue sample

Ultrasound shows where the filler sits, how deep it is and how far it has spread, and what it is likely made of. With a granuloma, it also shows the reaction around the filler. In the international study of 240 granulomas, they showed on the scan as dark nodules or as dark tissue around filler deposits, most often in the fat beneath the skin (37.1%) and in the lower eyelid, under-eye and inner cheek area (41.7%), and the authors conclude that ultrasound gives detailed anatomical information to support diagnosis and management (Wortsman 2025).

What the scan shows also points to the treatment. In a study of 231 patients with firm lumps after filler, all scanned with high-frequency ultrasound, the scan agreed with the tissue diagnosis in 85.7% of the 70 who had a biopsy, and the lumps fell into seven ultrasound types (Wang 2026). The findings that bear on a granuloma:

Swipe sideways to see the whole table.

That study did not use the Sculpting mode, and its figures do not apply to it. Invasive treatment also gave greater improvement overall in that study (Wang 2026). What the lump is on the scan, not simply that it is hard, decides the order: what is dissolved, what is treated without an incision, and the few that need an operation.

The scan shows what a lump is likely made of; it does not prove it. Where it does not look like filler, further tests are arranged, and a tissue sample remains the gold standard for identifying a filler (Requena 2011). A lump that keeps growing, sits where nothing was injected, feels fixed to deeper tissue, changes the skin over it or comes with swollen glands elsewhere is assessed for other causes before anything is treated as filler. Dr Sin Yong performs the scan himself, and the plan follows what it shows. More on scanning is in ultrasound-guided filler correction.

Red, hot, swollen or draining: medical treatment first

A granuloma that is red, hot, tender, swollen or draining may be actively inflamed or infected. It is treated medically first, before any device and before any talk of surgery. A collection of pus can need draining through a small opening alongside medical treatment; that is a smaller procedure than an operation to cut a granuloma out. More on this is in infection after filler.

• A red, hot, painful or draining lump, fever, or feeling unwell with a swollen lump: medical review the same day.
• A lump that is growing quickly: a doctor the same day; if no doctor can see you today, A&E. Not a planned laser visit.
• Redness that is spreading, with a fever, or swelling around the eye with pain: call 995 or go to A&E now.
• Difficulty breathing, a tight throat, swelling of the tongue or throat, or swelling that spreads quickly across the face, after any injection, including hyaluronidase, can be a serious allergic reaction: call 995 now. Itch, hives or swelling that spreads beyond the treated area: contact the clinic that injected you the same day.

Urgent: a change in vision or eye pain after filler: call 995 now. Skin that turns pale, dusky or mottled, or pain that is getting worse, needs urgent assessment by the doctor who injected you, or at A&E, now. See the warning signs of a blocked blood vessel after filler.

Hyaluronic acid granulomas: dissolved after a skin test

Most filler used today is hyaluronic acid, and it can cause a true granuloma, not only a lump of product. Half of the granulomas in the international ultrasound study followed hyaluronic acid (Wortsman 2025). Under the microscope, a series of 15 granulomatous reactions to hyaluronic acid filler found the same pattern, called palisaded, in 10 of them, and every case with a known product had been made with the same manufacturing technology; the authors link the pattern to that technology (Mu 2021).

Hyaluronic acid with a granuloma is dissolved. Hyaluronidase acts on hyaluronic acid only. If the area is red, hot or tender, that is treated medically first. The area is mapped with ultrasound and your allergy history is checked. Before planned dissolving, Dr Sin Yong always does a skin test: a small amount of hyaluronidase is injected just under the skin to check for a reaction. A small first dose then goes into the mapped hyaluronic acid, with a review at about 48 hours, because dissolving more than the excess can leave a hollow. In an emergency such as a blocked blood vessel, dissolving is not delayed for a skin test.

In the ultrasound study of 231 firm lumps, hyaluronic acid with a granuloma did better with invasive treatment (Wang 2026). If dissolving is not enough, the next step is explained at the review. Dr Sin Yong does not inject more filler over a granuloma; any refilling waits at least two weeks after dissolving and is considered only once the granuloma has been addressed. More is in how hyaluronidase is used and the skin test and hyaluronidase allergy.

Granulomas from Sculptra, Radiesse, Ellansé, Juvelook, silicone or PMMA: treated without an incision

Poly-L-lactic acid (Sculptra), calcium hydroxylapatite (Radiesse), polycaprolactone (Ellansé), the poly-D,L-lactic acid in Juvelook, PMMA, silicone and polyacrylamide or polyalkylimide gel cannot be dissolved: hyaluronidase acts on hyaluronic acid only. Material that cannot be dissolved can still be treated without an incision, and so can the granuloma around it.

Dr Sin Yong maps the granuloma and the material inside it with ultrasound, treats any inflammation medically first, and then treats it with the Sculpting mode of Time Freeze Laser LCLR®, his own protocol on a long-pulsed 755 nm and 1064 nm laser platform, directed at the mapped lump, without an incision. Like any laser, it can cause blistering or a change in skin colour, so settings are chosen for your skin. Where hyaluronic acid sits with the other material, the hyaluronic acid is dissolved first, after a skin test, and the rest is treated in a planned order.

Silicone granuloma

Silicone spreads through the tissue as droplets, which is why surgery struggles with it: authors who operated on 35 patients with silicone chin granulomas state that complete surgical removal is nearly impossible because the silicone migrates (Harlim 2026). Dr Sin Yong maps silicone granulomas with ultrasound and treats them with the Sculpting mode, without an incision. More is in silicone filler lumps.

What published work describes

In the systematic review of 117 patients with granulomas after collagen stimulators, medical treatment injected into the granuloma was the commonest treatment, and surgical removal often resolved symptoms (Wang 2025). A treatment review gives medical treatment injected into the granuloma, repeated in four-week cycles, as the preferred treatment; started early, it can shrink granulomas within weeks, and it can be combined with other medicines and pulsed lasers to limit thinning of the skin (Lemperle and Gauthier-Hazan 2009). In a published case of polycaprolactone granuloma diagnosed on a tissue sample, a combination of medical treatments was injected under ultrasound guidance, with medicines by mouth (Cerón Bohórquez 2024). In another case, swelling and granuloma-like nodules appeared four months after poly-D,L-lactic acid was injected along the jawline and cheeks; ultrasound showed several nodules, and medical treatment injected into them, with medical treatment by mouth, cleared the reaction after four sessions (Perez-Willis 2024). These are different approaches from the Sculpting mode, and their figures do not apply to it.

More by product: Sculptra lumps, Radiesse lumps, Ellansé nodules and Juvelook lumps.

Lip filler granuloma: late lumps in the lips

In a systematic review of 66 published cases of delayed lip nodules, silicone was the filler most often reported, followed by hyaluronic acid; the nodules appeared on average 35.2 months after treatment, and most of the 37 examined under the microscope were foreign-body granulomas. Most cases resolved after several treatments, starting with antibiotics or other medical treatment by mouth and followed by surgical excision (Trinh, Surg J 2022). In the review of granulomas after collagen stimulators, the area around the mouth was where they were found most often (Wang 2025).

Cutting into the lip leaves a scar that can be felt and can change the shape of the lip. Dr Sin Yong maps a lip granuloma with ultrasound, including how far it reaches into the lip and around the mouth. Inflammation is treated medically first, hyaluronic acid is dissolved after a skin test, and silicone and other material that cannot be dissolved is treated with the Sculpting mode of Time Freeze Laser LCLR®, without an incision. For hyaluronic acid lip filler that is lumpy or misplaced rather than a granuloma, see lip filler dissolving; for other lip problems, see lip filler gone wrong.

Filler granuloma removal surgery: what it involves, and the published numbers both ways

Filler granuloma removal surgery means cutting the granuloma out, through the skin or inside the mouth, together with the tissue it has grown into. A treatment review explains why this is harder than it sounds: granulomas grow finger-like into the surrounding tissue, so it places surgical excision last and keeps surgery or drainage for lumps and cystic granulomas with little ingrowth (Lemperle and Gauthier-Hazan 2009). Another review notes that excision is often incomplete because granulomas have ill-defined borders, and that it may leave scars and deformities (Lee 2015).

Where removal fell short

• Granulomas that came back. In 35 patients with silicone chin granulomas, the granulomas returned in 44.4% of those who had surgery alone and in 5.89% of those who also had medical treatment, and chin shape worsened again in the surgery-only group (Harlim 2026).
• Incomplete removal. In 35 women treated for granulomas after illegal filler injections, with drainage, a laser fibre and suction, and surgery where that was not enough, 4 had incomplete removal or an uneven contour, and 2 of them had another operation (Choi 2022).
• Treatment that had already failed. Of 173 patients treated for foreign-body granulomas after filler injections, including illegal materials, 104 had already been treated elsewhere without success, 21 of them with surgery (Park 2012).

Where surgery did well

• In the 35 patients with silicone chin granulomas, the operation improved chin shape and redness, with a complication rate of 2.86% (Harlim 2026).
• In the 173 patients, 121 had the granuloma cut out through a direct approach, and satisfaction was higher after surgery than after injection treatment, a median of 4 against 3 on a five-point scale (Park 2012).
• In 64 patients with facial granulomas from various injected materials, including fillers, silicone implants and fat, most had conservative treatment first and then surgery because their symptoms persisted, and all but one needed surgery. All reported a good outcome and satisfaction, earlier surgery went with a shorter course and higher satisfaction, and the authors conclude that granulomas need accurate diagnosis and surgical treatment (Jang 2021).
• In the review of granulomas after collagen stimulators, surgical removal often resolved symptoms (Wang 2025).

Surgery has a place. The point is the order: scan first, decide after. In the ultrasound study of 231 firm lumps, the type of lump on the scan was linked to which approach did better (Wang 2026). Some granulomas need a procedure, such as draining an abscess, and a lump that does not look like filler may need a tissue sample. A scan does not delay that decision: an operation can still be done later if it is ever needed, and it cannot be undone. More on operations to take filler out is in filler removal surgery.

Tried other treatments and almost given up?

Many patients who come to see Dr Sin Yong about filler granulomas tell him they have tried almost everything else and had given up hope. Having tried other treatments does not mean nothing more can be done: what is done next depends on what the scan shows.

That history is useful. Knowing what was injected, when, and what has already been tried often explains why a problem has stayed: hyaluronidase acts only on hyaluronic acid and only where it reaches, some fillers are not hyaluronic acid at all, and swelling or fluid can look like filler. Ultrasound shows which of these applies, and the plan starts from there. For material that cannot be dissolved, Dr Sin Yong uses the Sculpting mode of Time Freeze Laser LCLR® for nodules large and small, without an incision. How each person responds varies.

If you have been told nothing more can be done, it is still worth having the area scanned: ultrasound shows what is there, and the plan is made from that. Bring any records of past treatments, product names and dates if you have them. More on this is in when filler dissolving has not worked.

How Dr Sin Yong treats a filler granuloma without surgery

1. History. What was injected, where and when, if known; any infection, dental work or new filler before the lump appeared; what has been tried and what you were offered. Having no records is fine.
2. Ultrasound mapping. Dr Sin Yong scans each granuloma himself: where the filler sits, how deep it is, how far it has spread, what it is likely made of and the vessels nearby.
3. Inflammation or infection first. A red, hot, tender or draining granuloma is treated medically before anything else.
4. Hyaluronic acid. He dissolves it with hyaluronidase after checking your allergy history and doing a skin test: a small first dose, with a review at about 48 hours.
5. Material that cannot be dissolved. He treats the granuloma with the Sculpting mode of Time Freeze Laser LCLR®, directed at the mapped lump, without an incision.
6. Further tests where needed. A lump that does not look like filler on the scan is not treated as filler; further tests, including a tissue sample, are arranged.
7. Review. Each granuloma is reassessed, and any further visit is planned from what is seen.

He does not inject more filler to hide a granuloma. Where the face has lost shape, that is considered only after the granuloma has been addressed. Dr Sin Yong developed the Time Freeze Laser LCLR® protocol himself and performs every scan and treatment himself on Orchard Road. He has been invited to share his clinical expertise in Seoul, Dubai, Bangkok and São Paulo, including as a Global Key Opinion Leader. More on the laser is in the Sculpting mode of Time Freeze Laser LCLR®.