Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Two views of the chest were provided . There is a moderate right pleural effusion , similar in extent to the prior study . Well demarcated linear opacity at the right base has the configuration of atelectasis ; however , infection can not be excluded . There is mild prominence of the pulmonary vasculature consistent with pulmonary edema . Cardiomediastinal silhouette is otherwise unchanged . Osseous structures are intact .
    OUTPUT:
    
1 . Stable moderate right pleural effusion . 2 . Right basilar opacity , possibly atelectasis ; however , infection can not be excluded . 3 . Mild pulmonary edema .