Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Indistinct right basilar opacity is likely atelectasis as identified on recent CT . Trace left pleural effusion . Severe cardiomegaly without pulmonary vascular congestion or edema . A left pectoralis pacemaker with right atrial and right ventricular leads is noted . Cardiomediastinal hilar silhouettes are unremarkable . Incidental note is made of a moderate hiatal hernia and multiple contiguous , healed left rib fractures .
    OUTPUT:
    
Right basilar atelectasis . No pulmonary edema . Moderate hiatal hernia .