Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to the prior examination . The moderate to severe cardiomegaly is unchanged . There is again probably mild to moderate pulmonary vascular congestion . Severe degenerative changes at glenohumeral joints is unchanged . Opacification of the lung base on the lateral view is noted , slightly increased from ___ .
    OUTPUT:
    
Unchanged severe cardiomegaly and mild pulmonary vascular congestion . Assessment is limited due to low lung volumes , however opacification of the left lung base on lateral view appears mildly increased from prior examination and pneumonia can not be excluded .