Usefulness and safety of transbronchial biopsy with large forceps during flexible bronchoscopy.

Transbronchial lung biopsy (TBLB) using forceps is one of the most common procedures used to obtain lung tissue. The procedure's usefulness remains limited when diagnosing interstitial lung diseases. This retrospective descriptive study analyzed the feasibility and safety of using large forceps for TBLB in all patients who underwent TBLB from 2014 to 2018 for diffuse lung disease where the diagnosis could not be made by high-resolution chest computed tomography. We excluded patients with radiographic features of usual interstitial pneumonia. Among the 35 study patients, 7 were men and 28 were women. Diagnoses included respiratory associated bronchiolitis (7), diffuse alveolar damage (4), organizing pneumonia (4), nonspecific interstitial pneumonitis (3), acute fibrinous organizing pneumonia (3), sarcoidosis (2), hypersensitivity pneumonitis (2), IgG4 interstitial lung disease (1), eosinophilic pneumonia (1), pulmonary alveolar proteinosis (1), pulmonary fibrosis (1), pneumocystis (1), plasma-rich bronchiolitis (1), and diffuse alveolar hemorrhage (1). In three cases, the biopsies were nondiagnostic. Two patients developed a pneumothorax, and one required chest tube placement. There was one episode of minor bleeding. No escalation of care or hospitalization was required. Large-forceps TBLB is a feasible and safe method for obtaining parenchymal lung biopsies.