• Nicole Ng, Jigna Zatakia, Mary B Beasley, Michael Chung, Manisha Balwani, Chanan Stauffer, Edward H Schuchman, and Sakshi Dua.
• Division of Pulmonary, Critical Care, and Sleep Medicine, Icahn School of Medicine at Mount Sinai, New York, NY. Electronic address: nicole.ng2@mountsinai.org.
• Chest. 2022 Jul 1; 162 (1): e19e25e19-e25.

AbstractA 51-year-old Puerto Rican woman, with a known but inconclusive diagnosis of interstitial lung disease (ILD) since 2002 and recent moderate COVID-19, is now presenting with subacute worsening dyspnea on exertion. The patient had sporadic medical care over the years for her ILD (Table 1). Prior workup included chest CT imaging with a "crazy-paving" pattern of lung disease, as defined by ground-glass opacity with superimposed interlobular septal thickening and visible intralobular lines. Bronchoscopy showed normal airway examination, and BAL revealed clear fluid with foamy macrophages and negative cultures. Video-assisted thoracoscopic surgery and transbronchial biopsy specimens both showed foamy macrophages. Results of pulmonary function testing (PFT) revealed an isolated gas transfer defect on diffusing capacity of the lungs for carbon monoxide (Dlco). She had lived with mild yet nonprogressive functional impairment and stable exercise intolerance over these years. She was then hospitalized for COVID-19 in August 2020 and for recurrent shortness of breath in September 2020. She now presented 4 months following her September 2020 hospitalization.Copyright © 2022 American College of Chest Physicians. Published by Elsevier Inc. All rights reserved.

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