Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Multiple small pulmonary nodules are better assessed on prior CT chest . There is no evidence of pneumonia , edema , effusion , or pneumothorax . Cardio mediastinal silhouette notable for enlargement of the main pulmonary artery mobile which is confirmed on chest CT which may indicate underlying pulmonary arterial hypertension . The imaged bony structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
1 . No evidence of pneumonia or edema . 2 . Small pulmonary nodules better assessed on prior CT . 3 . Enlarged main pulmonary artery which likely reflect pulmonary arterial hypertension .