Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest radiograph obtained . There is interval placement of a right pigtail chest tube with significant decrease in right pleural effusion . Second right chest tube tip is seen near the right lung apex . A left pigtail chest tube is also present with a small residual left pleural effusion . There is significant interval improvement in aeration of both lungs . Left PICC line is unchanged . Old injury of the right distal clavicle redemonstrated . There is a small residual left apical pneumothorax .
    OUTPUT:
    
Improved aeration of the lungs with small residual effusions noted bilaterally . Small residual left apical pneumothorax .