Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal contours are unchanged . There is a stable , small right apical pneumothorax . Increased opacity at the right base without silhouetting of the pulmonary vasculature , right heart border , or right hemidiaphragm suggests a new , layering right pleural effusion . Persistent retrocardiac opacity is consistent with unchanged , left basilar atelectasis . Probable , small , new left pleural effusion . Parallel , linear densities projecting medial to the left humeral shaft could represent a displaced humeral fracture or superimposition of soft tissues . Clinical correlation is recommended and dedicated left humeral radiographs could be obtained .
    OUTPUT:
    
1 . Stable , small right apical pneumothorax . 2 . Probable , new , bilateral pleural effusions , right greater than left . 3 . Parallel , linear densities projecting medial to the left humeral shaft could represent a displaced humeral fracture or superimposition of soft tissues . Clinical correlation is recommended and dedicated left humeral radiographs could be obtained .