Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Tracheostomy tube and a right sided PICC line are appropriately positioned . Lung volumes remain low . There is increased thickening of the minor fissure , likely from platelike atelectasis . There is no pulmonary edema . A small left pleural effusion is stable . Lungs remain clear . There is no pneumothorax . Known free intra-abdominal air has not increased .
    OUTPUT:
    
1 . Persistent low lung volumes and moderate cardiomegaly , thickening of the minor fissure likely represents increased platelike atelectasis . 2 . Persistent small left effusion , no pulmonary edema . 3 . Free intra-abdominal air , unchanged .