Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided demonstrate midline sternotomy wires , prosthetic cardiac valve , and AICD in unchanged position . Biliary stent is noted in the right upper quadrant . Since the prior exam , there has been right thoracentesis with only minimal residual right pleural effusion . Ground - glass opacities in the right lower lung could reflect re-expansion pulmonary edema versus infection . There is loculated fluid along the minor fissure . The left lung remains clear . Heart size is enlarged . Mediastinal contour is stable . Bony structures are intact .
    OUTPUT:
    
Interval right thoracentesis with only small residual pleural effusion , though ground - glass opacity in the right lower lung raises concern for re-expansion pulmonary edema versus infection . Persistent cardiomegaly .