Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable view of the chest . Left PICC is again seen . On the current exam , the tip is not definitively identified , but is thought to be in the region of the cavoatrial junction . Appearance of the lungs has not changed . Persistent right basilar opacity is seen with blunting of the right lateral costophrenic angle with linear adjacent opacities , suggesting effusion and underlying atelectasis , noting infection can not be excluded , similar to prior . The left lung is grossly clear . The cardiomediastinal silhouette is unchanged . Multiple median sternotomy wires are again seen .
    OUTPUT:
    
Left PICC identified , noting that tip is not clearly seen but is likely in the region of the cavoatrial junction . No change from prior .