Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Elevation of the right hemidiaphragm is chronic . Heart size is moderately enlarged . Dilatation of the main pulmonary arteries is compatible with pulmonary arterial hypertension , unchanged . Crowding of the bronchovascular structures is demonstrated . There is likely mild pulmonary vascular engorgement . Mild bibasilar atelectasis is noted . No focal consolidation , pleural effusion or pneumothorax is identified , though assessment of the right lung apex is limited due to obscuration from soft tissue from the patient 's neck projecting over this region . Diffuse sclerosis of the osseous structures is compatible with renal osteodystrophy .
    OUTPUT:
    
Low lung volumes with mild pulmonary vascular congestion and bibasilar atelectasis .