Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again seen is an rounded mass in the right lower lobe measuring 5 .3 cm x 6 cm , better seen on the MR from ___ . No other focal consolidations are identified . There is no pneumothorax . There is a small right - sided pleural effusion . The aorta is tortuous . The hilar and mediastinal contours are otherwise unremarkable . The heart size is normal . The patient is status post median sternotomy with evidence of aortic and mitral valve repair .
    OUTPUT:
    
1 . Stable small right pleural effusion . 2 . 6 - cm round right lower lobe opacity , better evaluated on the MR from ___ . The differential is wide , including malignancy , rounded atelectasis , or organizing pneumonia . A dedicated Chest CT is highly recommended to further evaluate and characterize this abnormality .