RT Journal Article SR Electronic T1 Lung Bullae With Air-Fluid Levels: What Is the Appropriate Therapeutic Approach? JF Respiratory Care FD American Association for Respiratory Care SP 642 OP 645 DO 10.4187/respcare.01372 VO 57 IS 4 A1 Andres F Henao-Martinez A1 Juan F Fernandez A1 Sandra G Adams A1 Carlos Restrepo YR 2012 UL http://rc.rcjournal.com/content/57/4/642.abstract AB Air-fluid levels within emphysematous lung bullae are a relatively uncommon occurrence in patients with preexisting bullous disease, and are not commonly reported. We report 2 cases of new onset air-fluid levels in patients with underlying bullous disease with substantially different clinical presentations but with clinical improvement after medical therapy only.