Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is focal opacity at the right lateral costophrenic angle . There may be an associated small right pleural effusion as well . Left lung is clear . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities .
    OUTPUT:
    
New focal opacity at the right lung base laterally which could be pneumonia in the proper clinical setting . Acute sickle crisis or infarct in the setting of pulmonary embolism are also possible .