Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette is borderline enlarged , unchanged since the prior examination . There is prominence of the central pulmonary vasculature , also similar to the prior examination , without definite edema . No focal consolidation is identified . Again noted is a prominent right nipple shadow , unchanged since the priors . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No definite acute intrathoracic abnormality .