Abstract

Small pulmonary nodules can be difficult to identify during minimally invasive surgical (MIS) resection. Previous investigators have reported using standard bronchoscopy with electromagnetic navigation to identify small pulmonary nodules. Robot-assisted bronchoscopy has been introduced into clinical practice and has shown utility for the biopsy of small lesions. We report our experience using robot-assisted bronchoscopy with dye marking to aid in minimally invasive pulmonary resection. Patients with peripheral pulmonary nodules underwent robot-assisted bronchoscopy before a planned minimally invasive resection. Indocyanine green or methylene blue was injected directly into the targeted lesion. Surgical resection was then immediately performed. Success was defined as dye visualization leading to sublobar resection of the target nodule without the need for lobectomy or thoracotomy. Thirty patients with a single targeted nodule underwent robot-assisted bronchoscopy followed by MIS resection. The median lesion size was 9 mm (4 to 25 mm), and the median distance from the pleura was 5 mm (1 to 32 mm). The success rate was 83.3% (25 of 30). There were 3 cases in which the dye was not visualized, and in 2 cases there was free extravasation of dye. The targeted nodule was identified in these 5 patients without the need for thoracotomy or lobectomy. Pathology revealed non-small cell lung cancer (n = 13, 43.3%), metastatic disease (n = 11, 36.7%), and benign disease (n = 6, 20%). There were no complications related to the use of robot-assisted bronchoscopy. Robot-assisted bronchoscopy with dye marking is safe and effective for guiding minimally invasive resection of small peripheral pulmonary nodules.

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