Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval removal of the in right - sided PICC and enteric tube . There is a focal opacity in the left lower lobe obscuring the left heart border and left hemidiaphragm which is likely pleural effusion and atelectasis however a superimposed pneumonia can not be excluded . No pneumothorax is seen . Cardiomegaly is stable . The mediastinal silhouette is unremarkable .
    OUTPUT:
    
Left lower lobe pleural effusion and atelectasis . Superimposed pneumonia can not be excluded .