Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest show stable cardiac size and no central pulmonary vascular congestion . Slight prominence of the main pulmonary artery appears unchanged . No pleural effusion is present and no focal consolidation is seen . Overall , prominence of interstitium bilaterally appears stable and is related to some combination of body habitus and possible underlying interstitial fibrosis . There appears to be a healed fracture of the right sixth or seventh rib laterally .
    OUTPUT:
    
No suspicious interval change and no plain film evidence of acute CHF or hyperinflation .