Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest are compared to previous exam from ___ . Streaky left basilar opacity , which changes configuration on the two views is most suggestive of atelectasis . The lungs are otherwise grossly clear . There is no large confluent consolidation or effusion . Cardiomediastinal silhouette is within normal limits . Osseous and soft tissue structures are grossly unremarkable . There is suggestion of a right upper quadrant drain and catheter which are incompletely visualized .
    OUTPUT:
    
No definite acute cardiopulmonary process .