Abstract:

Objective

To evaluate the efficacy and safety of anchor positioning hook in preoperative localization of small pulmonary nodules under thoracoscopy.

Methods

A retrospective analysis was conducted on the clinical data of 107 patients （111 nodules） with pulmonary nodules or ground glass lesions that required localization before thoracoscopic surgery in our hospital from July 2021 to March 2023. All the lesions were located by anchor localization under the guidance of CT before operation. The effectiveness and complications of this localization method were comprehensively analyzed after operation.

Results

A total of 111 nodules were located， including 46 cases of pure ground glass lesions， 33 cases of partial ground glass nodules and 32 cases of solid nodules， with a localization success rate of 100%. Under video-assisted thoracoscopy， the lesions can be found quickly and accurately according to the location of the hook and resected， and there was no case of conversion to thoracotomy. No positioning hook shifted or fell off. Mild complications occurred in 16 cases （14.95%）， including 7 cases of pneumothorax （6.54%）， 3 case of hemoptysis（2.80%） and 6 cases of mild chest tightness and chest pain （5.60%）.

Conclusion

Anchor localization under the guidance of CT for preoperative localization of small pulmonary nodules or frosted glass lesions has the advantages of simple operation， high safety and good localization effect， and has a good application prospect.

Key words: Solitary pulmonary small nodule, CT-guided, Anchor positioning hook, Percutaneous localization, Complication