Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Two views were obtained of the chest . The lungs are hyperexpanded with blunting of the costophrenic sulci bilaterally , perhaps due to pleural thickening or trace pleural effusions , unchanged from the previous examination . No focal consolidation is seen . The heart and mediastinum are unremarkable aside from post - surgical changes and mild cardiomegaly , unchanged . Accentuation of thoracic kyphosis is seen without compression fracture . Valvular prosthesis and moderate hiatal hernia are noted .
    OUTPUT:
    
No acute intrathoracic process with unchanged blunting of the costophrenic sulci due to pleural thickening or trace effusions . Sensitivity for chest radiographs is low for incisional herniae . Consider cross - sectional imaging if diagnostic uncertainty persists .