Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An opacity along the minor fissure seen only on the lateral view could be developing pneumonia in the right middle lobe or lingula in correct clinical setting . It is unclear if this is an artifact from rib shadowing . There is no pleural effusion or pneumothorax . Cardiomediastinal and hilar silhouettes are normal size .
    OUTPUT:
    
An opacity along the minor fissure seen only on the lateral view could be rib shadowing , but developing pneumonia in the right middle lobe or lingula can not be ruled out in correct clinical setting .