Listening to the chest with a stethoscope (auscultation) may reveal crackles or a sound made by the inflamed lining of the lung rubbing against the lung (pleural friction rub).
Tests may include:
Bronchoscopy with bronchoalveolar lavage and transbronchial biopsy
Andrew Schriber, M.D., F.C.C.P., Specialist in Pulmonary, Critical Care, and Sleep Medicine, Virtua Memorial Hospital, Mount Holly, New Jersey. Review provided by VeriMed Healthcare Network.
References
Goldman L and Ausiello D. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders; 2007.