Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Stable cardiomegaly . The hilar contour is unremarkable . A left basilar opacity effaces the left costophrenic angle as well as the left heart border . There is right base atelectasis . Blunting of the right costophrenic angle suggests effusion . Again appreciated is a 3 .7 x 1 .4 cm spiculated mass in the left lung apex with fiducial marker . No acute bony abnormality is identified .
    OUTPUT:
    
1 . Stable left apical mass . 2 . New retrocardiac opacity representing consolidation or effusion . Small right - sided effusion .