Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A moderate size right hydropneumothorax is present with air - fluid level noted projecting over the right lung base . No definite contralateral shift of mediastinal structures or other evidence of tension is clearly noted . Heart size is normal . Mediastinal and hilar contours are unremarkable . Scarring is seen within the left apex . Pulmonary vasculature is normal . Lungs are clear . No acute osseous abnormality is detected .
    OUTPUT:
    
Moderate size right hydropneumothorax without definite signs of tension .