Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs demonstrate bilateral chest tubes have been removed . Small left apical pneumothorax is seen . Allowing for differences in patient positioning , this is not significantly changed from 7 : 40 a .m . . The cardiac and hilar , and mediastinal contours are normal . The vascular pedicle appears normal . Small pleural effusions probably contain blood as seen on CT . There is no focal consolidation . Subcutaneous emphysema of both hemithoraces is again noted .
    OUTPUT:
    
Tiny left apical pneumothorax . Allowing for differences in patient positioning , unchanged from the 7 : 40 a .m .