Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are normal . There is a lateral ill - defined opacity in right mid lung projecting over the seventh posterior rib which not does correspond to any lesions on prior CT . The cardiomediastinal and hilar contours are normal . The pleural surfaces are normal . The right Port - A - Cath terminates in the right atrium .
    OUTPUT:
    
The new right mid lung opacity could represent pneumonia but has a slightly atypical appearance . In the setting of chest pain and shortness of breath , pulmonary embolism could be an alternative consideration .