中文摘要：

目的：评估肺结节热消融治疗后胸膜损伤的CT表现,探讨其与术后并发症的关系。方法：对我院2013年7月-2016年7月40例患者的57个肺结节进行CT引导下热消融治疗,回顾性分析术后消融区域的CT改变和并发症发生率。结果：40例患者均完成热消融治疗,当消融区域邻近胸膜时,脏层胸膜出现局部凹陷,本组研究中8例患者出现该征象,其中6例（75%）术后发生胸膜相关并发症,4例（50%）行胸腔闭式引流。结论：肺结节热消融术后局部脏层胸膜凹陷可能是胸膜损伤的表现,提示患者有较高的胸膜相关并发症风险。

英文摘要：

Purpose： To evaluate the CT manifestation of pleural injury after thermal ablation for pulmonary nodule, and to analyze its relationship with post-ablation complications. Methods： A retrospective analysis of our database was performed between July 2013 and July 2016, and a total of 40 patients （57 pulmonary nodules） underwent CT guided thermal ablation. Post-ablation CT findings and complications were analyzed. Results： Thermal ablation was successfully accomplished in all patients. Visceral pleural indentation could be observed on CT scan when the ablation zone was adjacent to pleura. This sign was found in 8 patients, 6 of which （75%） had pleural- related complications. Among them, 4 patients （50%） underwent thoracic closed drainage. Conclusion： Visceral pleural indentation might be the sign of pleural injury after thermal ablation for pulmonary nodule, and it might suggest high risk of pleural-related complications.