Varicose Veins
Is the glue treatment better than laser for varicose veins?
It closes the vein just as well and leaves less bruising and numbness. The events that actually separate the two are too rare for a study of 7,844 patients to see.
Answer
Equivalent on the main outcome, more comfortable afterwards. In a systematic review and meta-analysis of 21 studies covering 7,844 patients and 9,677 limbs, cyanoacrylate ablation and endovenous radiofrequency ablation showed no significant difference in great saphenous vein occlusion rate or Venous Clinical Severity Score, while cyanoacrylate produced less ecchymosis (5.96 against 10.97 percent, P = .01), less paraesthesia (1.24 against 2.97 percent, P = .04) and a shorter procedure time — but rare serious harms specific to the glue, including a fatal pulmonary embolism and a severe granuloma, appear only as case reports and are not counted in that comparison.
Key takeaways
- 21 studies covering 7,844 patients and 9,677 limbs were pooled comparing cyanoacrylate ablation with endovenous radiofrequency ablation.
- No significant difference was found in great saphenous vein occlusion rate or Venous Clinical Severity Score.
- Cyanoacrylate produced less ecchymosis, 5.96 against 10.97 percent (P = .01).
- Cyanoacrylate produced less paraesthesia, 1.24 against 2.97 percent (P = .04).
- Procedure time was shorter, and cyanoacrylate does not require the tumescent anaesthesia thermal ablation needs.
- There was no significant difference in phlebitis, deep vein thrombosis or skin pigmentation.
- Case reports describe a fatal pulmonary embolism fourteen days after cyanoacrylate closure in an 81-year-old patient, and a severe cyanoacrylate granuloma in a patient with immune modulation.
Cyanoacrylate closure is sold on a line that is literally true: the vein is glued shut rather than burned, so the heat and the anaesthetic injections that go with heat are not needed. The question is whether that comfort comes with anything else attached.
On the outcome that matters most, they are the same
A systematic review and meta-analysis pooled 21 studies covering 7,844 patients and 9,677 limbs. Neither the rate at which the great saphenous vein closed nor the Venous Clinical Severity Score differed significantly between cyanoacrylate and radiofrequency ablation. On the thing the procedure is for, there is nothing to choose between them.
| Cyanoacrylate | Radiofrequency | |
|---|---|---|
| Vein closure rate | no significant difference | — |
| Ecchymosis (bruising) | 5.96% | 10.97% |
| Paraesthesia (numbness) | 1.24% | 2.97% |
| Phlebitis / DVT / pigmentation | no significant difference | — |
Where cyanoacrylate wins is recovery: about half the bruising, under half the numbness, a shorter procedure, and no tumescent anaesthesia. For most patients those are the differences they will actually notice.
What a meta-analysis of this size cannot see
A granuloma is a foreign-body reaction, and it is a category of harm that thermal ablation cannot produce because it leaves no implant behind. That is a real difference in kind rather than degree, and it is the reason a patient on immunosuppression is not in the same position as the average patient in the meta-analysis.
How to use this
For a patient choosing between the two on ordinary grounds, the evidence supports cyanoacrylate as equivalent in effect and easier to recover from, and that is a reasonable basis for choosing it. What the evidence does not support is the framing that glue is the safer procedure outright. It trades a common, mild, well-characterised set of after-effects for a rare and less well-characterised one.
Sources
- 1
Wen X, Wu H, He Y, Luo Y, Chen H
Efficacy and safety of cyanoacrylate ablation vs endovenous radiofrequency ablation for varicose veins in chronic great saphenous vein insufficiency: a systematic review and meta-analysisJournal of Vascular Surgery: Venous and Lymphatic Disorders 2026;14(4):102490
doi:10.1016/j.jvsv.2026.102490 · PMID:41866115
https://doi.org/10.1016/j.jvsv.2026.102490 - 2
Chatani K, Ihori H, Ohara K, Nonomura M, Kameyama T, Inoue H
A fatal case of acute pulmonary embolism after cyanoacrylate closure for varicose veinsAnnals of Vascular Diseases 2026;19(1):25-113
doi:10.3400/avd.cr.25-00113 · PMID:41789427
https://doi.org/10.3400/avd.cr.25-00113 - 3
Imai T, Harada D, Mizutani Y, Katsui S
Severe cyanoacrylate granuloma following cyanoacrylate closure for varicose veins in a patient with immune modulation: a case reportAnnals of Vascular Diseases 2026;19(1):25-144
doi:10.3400/avd.cr.25-00144 · PMID:41929588
https://doi.org/10.3400/avd.cr.25-00144
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