Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes remain persistently low . Streaky linear bibasilar atelectasis is noted . The lungs are otherwise grossly clear . There is no lobar consolidation , large pleural effusion , or overt pulmonary edema . The heart size appears top normal , though difficult to assess secondary to partial obscuration by left Bochdalek 's hernia , visualized on prior CT .
    OUTPUT:
    
Low lung volumes . No evidence of acute cardiopulmonary process .