Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes remain low with bronchovascular crowding , but have improved since ___ . Bilateral pleural effusions are small . Retrocardiac opacity may reflect atelectasis , similar the prior exam , although concurrent infection can not be excluded . No pneumothorax . Cardiomediastinal silhouette is unchanged with mild to moderate cardiomegaly . Aortic knob calcifications are moderate , overall unchanged . Elevation of the right hemidiaphragm is overall unchanged . There appears to be significant compression deformity and marked loss of vertebral body height of an upper lumbar spine vertebral body , not clearly appreciated of prior chest radiograph and may correspond to the L3 compression deformity on the lumbar spine CT from ___ , but has progressed in the interim .
    OUTPUT:
    
1 . Low lung volumes with bilateral small pleural effusions . 2 . Retrocardiac opacity may reflect atelectasis and / or concurrent infection . 3 increased ( >___ % ) loss of vertebral body height of a lumbar vertebral body ( perhaps L3 ) , progressed since ___ . Correlate with focal exam findings and consider cross sectional imaging to further evaluate . 4 . Prominent pulmonary artery may reflect sequelae of chronic pulmonary hypertension .