Cheerio Sign (Open Bronchus Sign) on Chest CT • Pulmonary nodule with a central lucency • DDx: Pulm adeno Ca, PLCH, primary and metastatic lung malignancy, rheumatoid nodules, GPA https://doi.org/10.1016/j.chest.201 #Cheerio #Sign #CT #Lung #Pulmonary #diagnosis #radiology #clinical
