Sarcoid is primarily a lung (pulmonary) disease. In the early stages, a chest film may show enlargement of lymph nodes in the center of the chest near the heart (mediastinum).
Update Date 5/30/2013
Updated by: Denis Hadjiliadis, MD, Assistant Professor of Medicine, Division of Pulmonary, Allergy and Critical Care, University of Pennsylvania, Philadelphia, PA. Also reviewed by A.D.A.M. Health Solutions, Ebix, Inc., Editorial Team: David Zieve, MD, MHA, Bethanne Black, Stephanie Slon, and Nissi Wang.