Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Sutures are noted in the left lung apex . Otherwise , the lungs are clear without focal opacity , pulmonary edema , or pneumothorax . Blunting of the left costophrenic angle on the lateral view suggests a trace pleural effusion . No right - sided pleural effusion is demonstrated . The cardiac and mediastinal contours are normal . No acute osseous abnormalities seen .
    OUTPUT:
    
Trace left pleural effusion . Otherwise no acute cardiopulmonary abnormality .