title: Computed tomography guided microcoil localization for pulmonary small nodules and ground-glass opacity prior to thoracoscopic resection.
abstract: BACKGROUND
  To evaluate the feasibility, safety and efficacy of computed tomography (CT)-guided microcoil localization for small pulmonary lesions prior to thoracoscopic resection.
  
  
  METHODS
  We retrospectively reviewed the medical data of patients with pulmonary solid nodules and ground-glass opacity (GGO) who underwent CT-guided microcoil localization prior to thoracoscopic surgery. The microcoil was deployed with the proximal end of the microcoil coiling beyond the parietal pleura while the distal part anchoring in the lung parenchyma. After marking with microcoil, the pulmonary lesions were removed by thoracoscopic surgery.
  
  
  RESULTS
  CT-guided microcoil placements were successful in all 98 lesions, including 14 solid nodules, 11 part-solid GGO, and 73 pure GGO. The mean distance from the lesions to the pleura surface was 11.1±6.6 mm. Eighty-four microcoils (85.7%) were successfully placed with the tails coiled beyond the parietal pleura. Seventeen patients (17.3%) had mild complications after the procedure of localization. Thirteen patients with asymptomatic pneumothorax, only one patient required further thoracentesis, four patients with pulmonary hematoma. Removal of the pulmonary lesions was successful in all patients. Sixty-six lesions (67.3%) were localized through the proximal end of the microcoil beyond the visceral pleura by visual inspection, 29 lesions were localized by palpation of the microcoil or the nodule, and 3 lesions had dislocation of the microcoil, resulting in a success rate of 96.9% for intraoperative localization.
  
  
  CONCLUSIONS
  CT-guided microcoil localization prior to thoracoscopic resection is a feasible, safe, and effective method for localization of pulmonary small nodules and GGO.
authors.affiliation: Department of Thoracic Surgery, Center for Mini-invasive Thoracic Surgery, People's Hospital, Peking University, Beijing 100044, China.
authors.forename: Xizhao
authors.initials: X
authors.lastname: Sui
authors.affiliation: Department of Thoracic Surgery, Center for Mini-invasive Thoracic Surgery, People's Hospital, Peking University, Beijing 100044, China.
authors.forename: Hui
authors.initials: H
authors.lastname: Zhao
authors.affiliation: Department of Thoracic Surgery, Center for Mini-invasive Thoracic Surgery, People's Hospital, Peking University, Beijing 100044, China.
authors.forename: Feng
authors.initials: F
authors.lastname: Yang
authors.affiliation: Department of Thoracic Surgery, Center for Mini-invasive Thoracic Surgery, People's Hospital, Peking University, Beijing 100044, China.
authors.forename: Ji-Lun
authors.initials: JL
authors.lastname: Li
authors.affiliation: Department of Thoracic Surgery, Center for Mini-invasive Thoracic Surgery, People's Hospital, Peking University, Beijing 100044, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Wang
keywords: Lung cancer; localization; nodule; thoracoscopic