Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are compared to previous exam from ___ . Previously identified right - sided PICC line is no longer visualized . There is a focal opacity seen in the left mid lung and adjacent to the hilum , potentially due to focal infiltrate . Opacity obscuring the right heart border is less conspicuous on the current exam . Elsewhere , the lungs are clear and there is no effusion or pulmonary vascular congestion . Cardiomediastinal silhouette is stable as are the osseous and soft tissue structures .
    OUTPUT:
    
Focal opacity in the left mid lung , potentially due to infiltrate . Recommend repeat after treatment to document resolution .