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Thoracic Oncology

A new era in lung cancer diagnostics: Robotic-assisted bronchoscopy

Lung cancer screening leads to increased detection of early stage lung cancer (LC). The majority of nodules detected are peripherally located.

Image-guided bronchoscopic modalities, including radial probe endobronchial ultrasound (r-EBUS) and electromagnetic navigation bronchoscopy (ENB), allow diagnosis of peripheral nodules with a low rate of complications. Although a meta-analysis of image-guided bronchoscopic procedures reported a diagnostic yield of 70% (Wang Memoli JS, et al. Chest. 2012;142[2]:385), the diagnostic yield remains inferior to CT-guided biopsy. Robotic-assisted bronchoscopy (RAB) with four-way steering, 180 degrees of deflection in any direction and better access to peripheral airways may improve the diagnostic yield. Two FDA-approved platforms are commercially available. The Monarch System, (Auris Health) has a 3.2-mm outer diameter and a 1.2-mm working channel. Results from an ongoing prospective, multicenter study in 24 patients revealed successful localization of targeted lesion in 92%, with no significant adverse events (Chen, et al. Am J Respir Crit Care Med. 2019;199:A7304/NCT03727425; Clinical Trials. 2019. https://clinicaltrials.gov/ct2/show/NCT03727425).

The Ion Endoluminal System (Intuitive Surgical) has a 3.5-mm outer diameter and a 2.0-mm working channel. Preliminary data revealed 96.6% of target lesions were successfully reached, and no adverse events (Fielding et al. Chest. 2017;152[4]:A858). A prospective, multicenter randomized trial is currently ongoing (Clinical Trials. 2019. https://clinicaltrials.gov/ct2/show/NCT03893539).

The aim of bronchoscopic procedures is to safely and effectively diagnose early stage LC. RAB shows a great deal of potential in the future of LC diagnostics.

Priya Patel MD

Fellow-in-Training Member

Adnan Majid, MD

NetWork Member