Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Note is made of severe dextroscoliosis of the thoracic spine as well as apparent fusion of several thoracic vertebral bodies and deformities of adjacent ribs presumably post traumatic , not significantly changed from the prior study . A retrocardiac opacity seen best on lateral view could possibly represent atelectasis however consolidation is also possible . The right lung appears clear . Again seen is opacity along the right hilum , not significantly changed in size from prior study .
    OUTPUT:
    
Retrocardiac opacity may represent combination of atelectasis , effusion or possibly infectious consolidation . Opacity along the right hilus is not changed from the prior study , however further evaluation with non-urgent CT is recommended for further characterization of these findings .