For months, a woman in her 50s was evaluated for a possible cancer in the middle of her chest. A lobulated mass there was pressing on the superior vena cava, the large vein that returns blood from the head and arms to the heart, and her face kept getting puffier. The explanation turned out to be something she had not thought to mention: hyaluronic acid filler injected into her breasts.
Physicians at Universiti Kebangsaan Malaysia's Hospital Canselor Tuanku Muhriz in Kuala Lumpur described the case Sept. 3 in Respirology Case Reports. After a multidisciplinary review, they concluded that filler had migrated from her breasts into lymph nodes in her chest, where a foreign-body inflammatory reaction enlarged the nodes and compressed the vein.
The case carries a regulatory footnote for U.S. readers. The FDA has not approved fillers for breast enlargement and recommends against using any injectable filler to increase breast size.
A Cancer Workup That Kept Coming Up Empty
She arrived with two months of worsening facial swelling, a telltale sign of superior vena cava obstruction. About six months earlier, another center had investigated enlarged lymph nodes in her mediastinum, the space between the lungs, with cancer as the working diagnosis.
A CT scan there showed a solid mass measuring about 6.2 centimeters from top to bottom, mildly compressing the vein. Surgeons sampled it through a minimally invasive chest procedure. The tissue contained lymphocytes, plasma cells, and clusters of foamy immune cells, but special stains and a broad panel of marker tests turned up no lymphoma, no other cancer, no tuberculosis, and no fungal infection.
That picture of chronic inflammation without a clear cause pushed the new team to ask pointed questions about cosmetic procedures and injected substances. Only then did the patient disclose bilateral breast augmentation with hyaluronic acid filler eight years earlier, followed by a repeat procedure about a year before this presentation. In the most recent session, 200 milliliters of filler was reportedly injected into each breast. The authors wrote that she had not initially considered the procedures "relevant to her presentation."
Filler Traced to Lymph Nodes Beside the Vein
On examination, her face looked congested, veins stood out across her chest wall, and the skin over both breasts and upper arms was tense. A repeat CT showed the nodes had grown to about 4.4 by 4.8 centimeters in cross-section, with more pressure on the vein. The scan also showed features suggesting filler material had moved into the nodes.
She declined a second surgical biopsy, so doctors sampled the nodes with a needle passed through the airway under ultrasound guidance. Again, there was no sign of cancer or tuberculosis, and blood tests for IgG4-related disease and autoimmune conditions were normal.
The team started the steroid dexamethasone. Within a week, her facial puffiness and swollen chest veins had resolved. A breast MRI then showed multiple oval lesions with irregular capsules surrounding the injected filler, and the chest lesion had shrunk to about 3.2 by 2.2 centimeters. A CT scan six weeks later showed no further growth, and she remains under surveillance.
No single test clinched the diagnosis. It rested on converging evidence: the timing after repeat injections, imaging suggestive of migration, the exclusion of other causes, and the rapid response to steroids.
A Dissolvable Filler Took an Unexpected Route
Hyaluronic acid fillers gained popularity partly because the material is biodegradable. Unlike implants, though, injected fillers have no shell holding them in place, and the authors note the material can spread through lymphatic channels. The breast drains mainly toward the armpit and along vessels beside the breastbone. When drainage is altered or large volumes are injected, the authors write, material may spread toward lymph nodes deeper in the chest. They suggest the large volume used in her latest procedure may have contributed, although a single case cannot establish that.
Most published cases of filler-related lymph node disease involve silicone. The authors describe mediastinal lymph node disease from hyaluronic acid filler as exceptionally rare, with only a limited number of reports.
Similar journeys have been documented before. A 2020 report in Gland Surgery described hyaluronic acid breast filler found in an armpit lymph node of a 45-year-old woman years after injection. A 2022 case in JTCVS Techniques described a woman whose breast filler had tracked into the chest, where enlarged nodes encased the superior vena cava and raised fears of lymphoma. She did not know which filler had been used, only that it was not silicone-based.
Tissue findings can also mislead. Silicone classically provokes granulomas, organized clusters of immune cells that wall off foreign material. This patient's samples showed no classic foreign-body granulomas, which the authors attribute partly to hyaluronic acid breaking down over time. They caution that missing granulomas should not rule out filler-related disease.
Cosmetic History Belongs in the Medical Chart
The report's central message is for clinicians: ask about breast filler in any patient with unexplained enlarged chest lymph nodes, especially when standard tests are inconclusive. The authors also note that hyaluronidase, the enzyme used to dissolve hyaluronic acid filler, likely has limited value once material has reached nodes deep in the chest, and that surgery there is technically difficult.
For patients, the FDA notes that most filler side effects appear shortly after injection, but some can surface weeks, months or even years later. The agency has warned against getting filler injected into the breasts, buttocks, or spaces between muscles, and it lists migration of filler material among the rare risks reported to it.
Anyone who has had breast or body filler and develops unexplained facial or arm swelling or newly prominent chest veins should seek medical care and tell clinicians exactly what was injected, where and when.
Key Questions Answered
What happened to the woman in this case?
Doctors concluded that hyaluronic acid filler from her breasts had migrated to lymph nodes in her chest. The inflamed, enlarged nodes compressed the superior vena cava, causing facial swelling and prominent chest veins.
Why did doctors first suspect cancer?
Enlarged chest lymph nodes pressing on the superior vena cava are often caused by cancers such as lymphoma. Her biopsies showed only chronic inflammation, which led doctors to ask about cosmetic procedures.
How was she treated?
She received the steroid dexamethasone. Her facial swelling and swollen chest veins resolved within a week, the chest lesion shrank, and a scan six weeks later showed no further growth.
Are breast fillers approved in the United States?
No. The FDA recommends against using dermal fillers or any injectable filler to increase breast size and has warned against filler injections into the breasts, buttocks or spaces between muscles.
What should people with past filler injections do?
Keep a record of every cosmetic injection and share it with clinicians, particularly if new swelling, lumps or enlarged lymph nodes appear, even years later.
