Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest were provided . Midline sternotomy wires and mediastinal clips are again noted . Small bilateral pleural effusions are again noted . There is a right perihilar opacity which is new from the prior exam and could represent a pseudo tumor / loculated pleural effusion with the possibility of atelectasis / infection also within the differential . There is no pneumothorax . The heart remains top - normal in size . The mediastinal contour is stable with atherosclerotic calcifications noted . The imaged osseous structures are intact .
    OUTPUT:
    
Small bilateral effusions with right perihilar opacity which could represent loculated pleural effusion versus atelectasis / pneumonia . Followup to resolution is advised .