Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A PICC line terminates in the superior vena cava . The heart is mildly enlarged with a left ventricular configuration . The aortic arch is partly calcified . The lung volumes are low . There are patchy opacities at both lung bases , probably more extensive on the left ; these could be seen with atelectasis , which was also visualized on recent prior CT imaging from ___ in association with pleural effusions . Subpulmonic pleural effusions may persist ; at least on the left , a persistent effusion is implied by haziness in the left costophrenic sulcus .
    OUTPUT:
    
Low lung volumes with patchy basilar opacities ; although an infectious etiology is hard to entirely exclude , these are suspected to reflect atelectasis associated with small subpulmonic effusions , as demonstrated previously .