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Description of morphological evolution of lung tumors treated by percutaneous radiofrequency ablation: long term follow-up of 100 lesions with chest CT
International Journal of Hyperthermia ( IF 3.1 ) Pub Date : 2021-05-25 , DOI: 10.1080/02656736.2021.1928773
Paul Habert 1, 2, 3 , Mathieu Di Bisceglie 1, 2, 3 , Axel Bartoli 1, 4 , Alexis Jacquier 1, 4 , Pauline Brige 2, 3 , Vincent Vidal 1, 2, 3 , Jean-François Hak 1, 2, 3 , Farouk Tradi 1, 2, 3 , Jean-Yves Gaubert 1, 2, 3
Affiliation  

Abstract

Purpose

Radiofrequency ablation (RFA) is a safe and effective minimally invasive treatment for pulmonary tumors. Patterns on chest computed tomography (CT) after RFA are classified into five types; however, the follow-up has not been fully described. The objectives of this study were to describe (1) the CT pattern 3 years after RFA and (2) its evolution over 7 years.

Materials and methods

Lesions treated with RFA between 2009 and 2017 and with ≥3 years of follow-up CT data were included. Lesions with local recurrences were excluded from the study. The morphology of the ablation zone was classified as nodular, fibrotic, atelectatic, cavitary, and disappeared. Other initial anatomical parameters were recorded. Kruskal–Wallis or Chi-square tests were used to compare the groups.

Results

One hundred lung RFA scars were included, and a retrospective longitudinal study was performed. Three years after RFA, nodular, fibrotic, atelectatic, and cavitary scars, and disappearance were observed in 49%, 36%, 5%, 3%, and 6% of the scars, respectively. Evolution over 7 years showed that the fibrosis, atelectasis, and disappearance remained stable over time, whereas 28% of nodular scars evolved into fibrotic scars. Additionally, 45% of cavitary scars evolved into nodular scars. Pleural contact was associated with disappearance, and the use of a 20-mm needle was associated with atelectasis.

Conclusion

Follow-up after RFA showed that fibrosis, disappearance, and atelectasis remained stable over time. Nodular scars could evolve into fibrotic scars, and cavitary scars could evolve into nodular scars.



中文翻译:

经皮射频消融治疗肺肿瘤的形态演变描述:胸部CT对100个病变的长期随访

摘要

目的

射频消融(RFA)是一种安全有效的微创治疗肺部肿瘤的方法。RFA后的胸部计算机断层扫描(CT)模式可分为五种类型:但是,后续措施尚未完全描述。这项研究的目的是描述(1)RFA 3年后的CT模式和(2)7年以上的演变。

材料和方法

纳入2009年至2017年接受RFA治疗且≥3年的随访CT数据的病变。该研究排除了具有局部复发的病变。消融区的形态分为结节型,纤维化型,单侧型,空化型和消失型。记录其他初始解剖参数。使用Kruskal–Wallis或卡方检验比较两组。

结果

包括一百个肺RFA疤痕,并进行了回顾性纵向研究。RFA三年后,分别在49%,36%,5%,3%和6%的疤痕中观察到结节性,纤维化,单侧和空洞性疤痕以及消失。历时7年的演变表明,随着时间的推移,纤维化,肺不张和消失仍保持稳定,而28%的结节性瘢痕演变为纤维化性瘢痕。此外,45%的空洞疤痕演变为结节性疤痕。胸膜接触与消失有关,使用20毫米针与肺不张相关。

结论

RFA后的随访表明,随着时间的推移,纤维化,消失和肺不张仍保持稳定。结节性疤痕可能演变为纤维化疤痕,而空洞性疤痕可能演变为结节性疤痕。

更新日期:2021-05-25
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