Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are grossly clear however , known right basilar calcified pleural based opacity is not clearly delineated on this portable film . The cardiac silhouette is moderately enlarged similar to prior and there is enlargement of the main pulmonary artery .
    OUTPUT:
    
Cardiomegaly without definite acute cardiopulmonary process .