Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided AICD device is noted with single lead terminating in the region of the right ventricle . Mild cardiomegaly is unchanged . Aortic knob calcifications are re- demonstrated . The mediastinal and hilar contours are similar . Pulmonary vasculature is minimally engorged without pulmonary edema . There is patchy atelectasis at the lung bases without focal consolidation . No pleural effusion or pneumothorax is present . There are no acute osseous abnormalities .
    OUTPUT:
    
Mild pulmonary vascular congestion without frank pulmonary edema . Mild bibasilar atelectasis .