Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a focal opacity at the right costophrenic angle , somewhat wedge shaped . No other focal opacity . No pleural effusion or pneumothorax . Heart size is normal . Cardiomediastinal and hilar silhouettes are unremarkable .
    OUTPUT:
    
Right costophrenic angle opacity could reflect underlying pneumonia . Pulmonary embolism is also a consideration given the location , for which CTPA may be indicated .