Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mild to moderately enlarged . The mediastinal and hilar contours appear unchanged . There is calcification along the arch of the aorta as well as moderate unfolding . Moderate relative elevation of the right hemidiaphragm is somewhat greater than on the prior examination . There is no definite pleural effusion or pneumothorax . A mild but diffuse interstitial abnormality suggests mild fluid overload or pulmonary vascular congestion . Fissures also appear thickened . Degenerative changes are incompletely characterized along the right shoulder . There is severe rightward spinal curvature centered along the mid lumbar spine with moderate leftward lower thoracic curvature .
    OUTPUT:
    
Findings suggesting mild pulmonary vascular congestion .