Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are low lung volumes with moderate cardiomegaly but no evidence of failure . There are no masses , lesions , or areas of focal consolidation . The aorta is mildly tortuous . Pleural surfaces are unremarkable . Mediastinal silhouette is normal with no evidence of pneumo - or hemomediastinum . There are mild multilevel degenerative changes seen in the thoracic spine .
    OUTPUT:
    
Cardiomegaly with no evidence of heart failure . No radiological explanation for hematemesis .