Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The right - sided Port - A - Cath tip is at the cavoatrial junction , unchanged from prior exam . There has been interval placement of a tube over the left lower chest . The large left pleural effusion demonstrates minimal decrease . A small apical pleural effusion is present . There is no mediastinal shift . The remaining right lung demonstrates mild edema .
    OUTPUT:
    
Status post left pleural catheter placement with small apical pneumothorax without evidence of tension ; persisting large left pleural effusion with underlying atelectasis .