Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Exam is limited secondary to low lung volumes and overlying soft tissues , the lateral view is particularly limited due to patient 's arms overlying the thoracic cavity . There is no large confluent consolidation or overt pulmonary edema . Posterior costophrenic angles are not well seen potentially technical although underlying effusions are possible . Median sternotomy wires are noted . Dense atherosclerotic calcifications as well as probable coronary artery stents are seen . No acute osseous abnormalities . Multiple surgical clips seen in the upper abdomen .
    OUTPUT:
    
Limited exam . Densities at the posterior costophrenic angles potentially in part technical and due to overlying soft tissues although underlying effusion or other process would be difficult to exclude . No definite correlate identified on the frontal view .