Initial ablation ratio predicts the recurrence of low-risk papillary thyroid microcarcinomas treated with microwave ablation: a 5-year, single-institution cohort study

Bibliographic Details
Title: Initial ablation ratio predicts the recurrence of low-risk papillary thyroid microcarcinomas treated with microwave ablation: a 5-year, single-institution cohort study
Authors: Yujie Ren, Xue Han, Yujiang Li, Guofang Chen, Lin Jiang, Chao Liu, Shuhang Xu
Source: Endocrine Connections, Vol 12, Iss 9, Pp 1-11 (2023)
Publisher Information: Bioscientifica, 2023.
Publication Year: 2023
Collection: LCC:Diseases of the endocrine glands. Clinical endocrinology
Subject Terms: microwave ablation, recurrence, papillary thyroid microcarcinoma, initial ablation ratio, Diseases of the endocrine glands. Clinical endocrinology, RC648-665
More Details: Objective: To assess the long-term efficacy and safety of microwave ablation (MWA) in treating low-risk papillary thyroid microcarcinomas (PTMC) and to identify predictive factors for the postoperative local tumor progression of PTMC. Methods: A total of 154 low-risk PTMC patients treated with MWA who were followed up for at least 3 months were retrospectively recruited. Ultrasonography was performed after MWA to assess the local tumor progression. Adverse events associated with MWA were recorded. The ablated volume (Va) and initial ablation ratio (IAR) were measured to assess their influences on the recurrence risk of PTMC. Results: The mean tumor volume of PTMC before MWA was 0.071 (0.039, 0.121) cm3, with a maximum diameter of 0.60 ± 0.18 cm. All PTMC patients were followed up for 6 (3, 18) months. Va increased immediately after MWA, then gradually decreased over time, till significantly smaller at 12 months than that before MWA (P < 0.05). The median volume reduction ratio at 24 months reached 100%, which was maintained during a 60-month follow-up. A total of 7 (4.55%) cases of local tumor progression were recorded during the follow-up. Kaplan–Meier survival analysis revealed that the rate of local tumor progression was significantly lower in PTMC patients with a maximum tumor diameter < 0.70 cm than in those with ≥0.70 cm (P = 0.031). A significant better prognosis was achieved in PTMC patients with IAR ≥ 15 than in those with IAR < 15 (P = 0.015). Sex, age (2.0 mU/L) of PTMC patients were not correlated with local tumor progression. Conclusion: MWA is an effective therapeutic strategy for low-risk PTMC with high safety. The maximum tumor diameter and IAR are predictive factors for the local tumor progression of PTMC after MWA.
Document Type: article
File Description: electronic resource
Language: English
ISSN: 2049-3614
Relation: https://ec.bioscientifica.com/view/journals/ec/12/9/EC-23-0128.xml; https://doaj.org/toc/2049-3614
DOI: 10.1530/EC-23-0128
Access URL: https://doaj.org/article/5445d170506243ab87d41bd34ef82eba
Accession Number: edsdoj.5445d170506243ab87d41bd34ef82eba
Database: Directory of Open Access Journals
More Details
ISSN:20493614
DOI:10.1530/EC-23-0128
Published in:Endocrine Connections
Language:English