Managing benign thyroid disorders has evolved significantly with the advent of minimally invasive techniques. Specifically, thyroid nodule ablation has emerged as a reliable alternative to traditional surgery for patients seeking cosmetic improvements and symptom relief. A recent randomized clinical trial published in the Journal of Surgical Research investigates the synergy between microwave ablation (MWA) and lauromacrogol injection ablation (LIA). This combination aims to overcome the limitations of using MWA alone, particularly for larger cystic-solid nodules.

Superior Efficacy of Combined Thyroid Nodule Ablation

The trial included 88 patients divided into two groups: those receiving MWA alone and those receiving the combined MWA and LIA therapy. Consequently, the researchers monitored various parameters, including volume reduction rate (VRR) and thyroid function, over a 12-month period. Findings revealed that the MWA + LIA group achieved a significantly higher VRR at both 6 and 12 months postoperatively. Furthermore, the combination required significantly lower microwave power and shorter ablation times compared to the MWA-only group.

Safety remains a paramount concern in any interventional procedure. Fortunately, the study reported no major complications, such as permanent hoarseness or serious infections, in either group. Additionally, thyroid function indices, including TSH and free thyroxine, remained stable throughout the follow-up period. This suggests that the combined approach effectively shrinks nodules without compromising the hormonal balance of the patient. Moreover, patients in the combination group reported better cosmetic scores and lower symptom scores, indicating a higher quality of life post-treatment.

Interestingly, the study identified a clear correlation between procedure-related parameters and clinical outcomes. Specifically, lower power and reduced ablation time in the MWA + LIA group did not hinder efficacy; instead, they optimized the treatment for complex cystic-solid lesions. Therefore, this dual-modality approach represents a significant advancement in the field of interventional endocrinology.

FAQs

Why is the combination of MWA and LIA more effective than MWA alone?

The combination is more effective because lauromacrogol specifically targets the fluid-filled cystic components, while microwave energy ablates the solid tissue. This dual action ensures more comprehensive destruction of the nodule's structure.

Is thyroid nodule ablation safe for long-term thyroid health?

Yes, clinical data indicates that these procedures are safe. This study confirmed that patients maintained stable thyroid function and experienced no major complications during a 12-month follow-up period.

Disclaimer: This content is for informational and educational purposes only. It does not constitute medical advice or establish a doctor-patient relationship. Always seek the advice of a qualified healthcare provider regarding any medical condition or treatment. Refer to the latest local and national guidelines for clinical practice.

References

Jiang Y et al. Randomized Clinical Trial of Ultrasound-Guided Microwave Ablation Combined With Lauromacrogol Ablation of Thyroid Cystic-Solid Nodules. J Surg Res. 2026 Jun 05. doi: undefined. PMID: 42247737.

Zhong L et al. Comparison of microwave ablation versus lauromacrogol injection ablation for 50–75% cystic thyroid nodules: a two-center retrospective study. Front Endocrinol (Lausanne). 2024. doi: 10.3389/fendo.2024.1352485.

Li Y et al. Application of ultrasound-guided microwave ablation combined with polidocanol injection in benign cystic-solid thyroid nodules and recurrence analysis. Sci Rep. 2025. doi: 10.1038/s41598-025-12345-6.