Abstract
To evaluate the efficacy and safety of percutaneous laser ablation (PLA) for unifocal T1N0M0 papillary thyroid microcarcinoma(PTMC). A retrospective study was conducted in 30 patients with single PTMC which was diagnosed by fine-needle aspiration biopsy (FNAB). PLA was performed for proper time to achieve adequate ablation zones. The extent of ablation was assessed by contrast-enhanced ultrasound (CEUS) immediately and 7days after PLA. Complications were recorded. The size and volume of the ablation area and thyroid hormones were measured, and clinical evaluations were performed at 1, 3, 6 and12 months, and every half year thereafter. The procedure was well tolerated without serious complications. Of the 30 patients, 29 were treated successfully under local anaesthesia in a single session. Only one incomplete ablation was detected by immediate CEUS after PLA, and a second ablation was performed. At the last follow-up, ten (33.3%) ablation zones had disappeared, and 20 (66.67%) ablation zones remained as scar-like lesions. No regrowth of treated tumours, local recurrence or distant metastases were detected. During the short-term follow-up period, ultrasound-guided PLA appears to be effective and safe for treating solitary T1N0M0 PTMC in selected patients who are ineligible for surgery. • Ultrasound is a useful tool in percutaneous laser ablation (PLA). • PLA is safe for treating papillary thyroid microcarcinoma. • PLA is effective for single papillary thyroid microcarcinoma.
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