Fibered Confocal Fluorescence Microscopy Imaging in Patients With Diffuse Parenchymal Lung Diseases

Fibered confocal fluorescence microscopy (FCFM) (CellvizioR Lung, MaunaKea Technologies, France) could potentially provide diagnostic information on fibrosis and inflammation of the distal air spaces associated with diffuse parenchymal lung diseases without the need for lung biopsies, thereby fulfilling the gap in the investigators current medical practice of a minimally invasive procedures with few complications and a high diagnostic fidelity. In patients scheduled for bronchoscopy as part of regular clinical care/diagnostic workup, the investigators will offer the patient concurrent FCFM imaging to be performed during the bronchoscopic procedure. The investigators aim to identify and catalogue distinct and discriminating features seen on images obtained from fibered confocal fluorescence microscopy in this group of patients, and to correlate these findings with specific high resolution computed tomography (HRCT) features and pathological findings if available. Eventually the investigators hope to create diagnostic criteria for fibered confocal fluorescence microscopy image interpretation of specific diffuse parenchymal lung disease entities.