Desenlaces radiológicos del síndrome de insuficiencia respiratoria progresiva aguda (SIRPA) Translated title: Resultados radiológicos da síndrome da angústia respiratória aguda (SARA) Translated title: Radiological outcomes of acute respiratory distress syndrome (ARDS)

Imaging plays a key role in the diagnosis and follow-up of acute respiratory distress syndrome (ARDS). Chest radiography, bedside lung ultrasonography and computed tomography scans can provide useful information for the management of patients and detection of prognostic factors. However, imaging findings are not specific and several possible differential diagnoses should be taken into account. Herein we will review the role of radiological techniques in ARDS, highlight the plain radiological and computed tomography findings according to the pathological stage of the disease (exudative, inflammatory and fibroproliferative), and summarise the main points for the differential diagnosis with cardiogenic oedema, which is still challenging in the acute stage.