ABSTRACT
Diffuse alveolar hemorrhage is a syndrome characterized by cough, hemoptysis, diffuse pulmonary infiltrates, anemia, and hypoxemic respiratory distress, and lung infections also play a role in its etiology. The restricted use of bronchoscopy in COVID-19 patients due to the risk of infection has led to the poor recognition of diffuse alveolar hemorrhage in COVID-19. We present here the case of a 35-year-old patient with laboratory, radiological and bronchoscopic evidence of diffuse alveolar hemorrhage who was diagnosed with COVID-19 by bronchial lavage. The restrictions on the use of bronchoscopy during the pandemic due to the high risk of infection has led diagnoses of COVID-19 to be mistakenly excluded in immunosuppressive patients with a negative SARS-CoV-2 polymerase chain reaction test, and the under-recognition of conditions such as diffuse alveolar hemorrhage and secondary infection in patients with a positive SARS-CoV-2 PCR. Copyright © 2022 LookUs Scientific. All rights reserved.