Abstract
Background The possibility of coil dislocation in computed tomography (CT)-guided microcoil
localization of superficial pulmonary nodules is relatively high. The aim of the study
is to investigate the outcomes of deeper localization technique during CT-guided microcoil
localization of superficial pulmonary nodules before video-assisted thoracoscopic
surgery (VATS).
Methods Fifty-seven identified superficial pulmonary nodules (nodule–pleural distance ≤ 1 cm
on CT image) from 51 consecutive patients underwent CT-guided microcoil localization,
and subsequent VATSs were included. The rate of technical success, complications,
and excised lung volume were compared between deeper localization technique group
and conventional localization technique group.
Results The technical success rate of the localization procedure was 100% (25/25) in the
deeper localization group and 81.3% (26/32) in the conventional localization group
(p = 0.030). Excluding one case of lobectomy, the excised lung volume in the deeper
localization group and the conventional localization group was 39.3 ± 23.5 and 37.2 ± 16.2 cm3, respectively (p = 0.684). The incidence of pneumothorax was similar between the deeper localization
group and the conventional localization group (24.0 vs. 21.9%, respectively, p = 0.850). The incidence of intrapulmonary hemorrhage in the deeper localization group
was higher (16.0%) than that in the conventional localization group (6.3%), but the
difference was not statistically significant (p = 0.388).
Conclusion CT-guided microcoil localization of superficial pulmonary nodules prior to VATS using
a deeper localization technique is feasible. Deeper localization technique reduced
the occurrence of dislocation but did not increase excised lung volume.
Keywords
computed tomography - CT scan - minimally invasive - lung cancer - treatment
