Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right - sided indwelling catheter is present , tip at SVC / RA junction . No pneumothorax detected . Note is made of asymmetry in the patient 's breast shadows , smaller on the left . There appears to be some increased density over the left lung . Given the density of the left breast on the ___ CT , it is possible that this is accounted for by increased soft tissue density in the present . In addition , there is a nodular density at the left lung base , projecting adjacent to the left cardiac contour , measuring approximately 21 mm in diameter . Possible right base pulmonary nodules similar to the ___ film . The cardiomediastinal silhouette is at the upper limits of normal . The right lung is grossly clear . Though the mediastinum appears midline , there does appear to be slight asymmetry in the lungs , slightly larger on the right . No CHF or right - sided opacity is detected . No effusion is detected on either side . Punctate density overlying the left neck may represent a small amount of carotid artery calcification .
    OUTPUT:
    
1 . Possible slight asymmetry in the size of the hemithoraces , though not clearly different from ___ . 2 . Hazy opacity overlying the left lower lung . Given the degree of increased density in the left breast on the ___ CT , this could be due to density of the overlying breast tissues , rather than a primary process in thelung . 3 . Nodular density at left lung base concerning for a lung nodule or pulmonary metastasis . This probably is accounted for by a pulmonary nodule seen on the ___ chest CT ( series 2 , image ___ from that study ) , though has likely grown since that time and is clearly larger than on the ___ CXR ( approximately 21 mm in diameter today versus ___ .7 mm on ___ CXR ) . 4 . ___ CT also described sternal metastasis , which is not readily visible on today 's exam due to technical limitations of the modality . 5 . The right lung shows no CHF , focal infiltrate or effusion . Possible right base pulmonary nodules similar to the ___ film . 6 . No ptx detected .