Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided demonstrate interval removal of the right IJ central venous catheter . Midline sternotomy wires and mediastinal clips are again noted . There is small amount of residual pleural fluid tracking along the fissure on the left , likely accounting for the hazy minimal opacity projecting over the left hemithorax . Otherwise , the lungs appear clear . Heart size is top normal , though this is unchanged . Mediastinal contour is unremarkable . Chronic deformity and post-surgical changes of the right AC joint noted . Otherwise , bony structures appear unremarkable .
    OUTPUT:
    
Trace pleural fluid on the left tracking along the fissure , overall improved from prior . Otherwise , no acute abnormalities .