Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bilateral lower lungs ground glass and alveolar opacities compatible with infection have significantly improved . There is no new opacity . There is no pleural effusion or pneumothorax . Mediastinal and cardiac contours are within normal limits . Left - sided subclavian line ends in upper SVC .
    OUTPUT:
    
Bilateral lower lungs pneumonia has significantly improved .