Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . Mild cardiomegaly is noted without signs of edema or congestion . No focal consolidation concerning for pneumonia . There is stable prominence of the superior mediastinum which reflect patient 's known thyroid goiter . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
Mild cardiomegaly . Mediastinal prominence is due to known thyroid goiter in appears unchanged .