Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Subtle heterogenous opacity is seen in the right upper lung , which is concerning for aspiration or developing pneumonia . A small left pleural effusion is noted , but otherwise remains clear . The heart size is normal . No pulmonary edema or pneumothorax . Tracheostomy is in unchanged position .
    OUTPUT:
    
1 . Subtle heterogenous opacity in the right upper lung is concerning for aspiration or developing pneumonia . 2 . Small left pleural effusion .