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  • Title: CT-guided localization of small pulmonary nodules using adjacent microcoil implantation prior to video-assisted thoracoscopic surgical resection.
    Author: Su TH, Fan YF, Jin L, He W, Hu LB.
    Journal: Eur Radiol; 2015 Sep; 25(9):2627-33. PubMed ID: 25773939.
    Abstract:
    OBJECTIVES: To describe and assess the localization of small peripheral pulmonary nodules prior to video-assisted thoracoscopic surgical (VATS) resection using the implantation of microcoils. METHODS: Ninety-two patients with 101 pulmonary nodules underwent computed tomography (CT)-guided implantation of microcoils proximal to each nodule. Patients were randomly assigned to undergo entire microcoil or leaving-microcoil-end implantations. The complications and efficacy of the two implantation methods were evaluated. VATS resection of lung tissue containing each pulmonary lesion and microcoil were performed in the direction of the microcoil marker. Histopathological analysis was performed for the resected pulmonary lesions. RESULTS: CT-guided microcoil implantation was successful in 99/101 cases, and the placement of microcoils within 1 cm of the nodules was not disruptive. There was no difference in the complications and efficacy associated with the entire implantation method (performed for 51/99 nodules) versus the leaving-microcoil-end implantation method (performed for 48/99 nodules). All nodules were successfully removed using VATS resection. Asymptomatic pneumothorax occurred in 16 patients and mild pulmonary haemorrhage occurred in nine patients. However, none of these patients required further surgical treatment. CONCLUSIONS: Preoperative localization of small pulmonary nodules using a refined percutaneous microcoil implantation method was found to be safe and useful prior to VATS resection. KEY POINTS: • An increasing number of small, indeterminate pulmonary lesions need to be characterized. • Entire microcoil and leaving-microcoil-end implantation methods were described for nodule localization. • Adjacent microcoil localization prior to video-assisted thoracoscopic surgical resection involved minimal intervention. • Preoperative microcoil localization facilitates the definitive resection of small pulmonary nodules.
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