Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Assessment of the right upper lobe is limited as the patient 's chin and neck obscure this region . Lung volumes are low . Mild cardiomegaly is re - demonstrated with a left ventricular predominance . The aorta remains tortuous . Right subclavian central venous catheter has been removed . There is crowding of the bronchovascular structures due to low lung volumes , though there appears to be mild pulmonary vascular congestion , improved compared to the prior study . No pleural effusion is identified , and no left - sided pneumothorax is seen . Diffuse sclerosis of the osseous structures is compatible with renal osteodystrophy .
    OUTPUT:
    
Limited exam . Mild pulmonary vascular congestion . Low lung volumes .