Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are clear without focal consolidation or effusion . There is mild pulmonary vascular congestion without pulmonary edema . Moderate cardiomegaly is again noted as well as atherosclerotic calcifications at the arch . Nodular opacity at the left lung base may represent a nipple shadow .
    OUTPUT:
    
Cardiomegaly mild pulmonary vascular congestion without overt pulmonary edema . Nodule projecting over left lung base , potentially nipple shadow however repeat with nipple marker can confirm .