Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size , mediastinal and hilar contours are normal . A subtle patchy opacity in the left retrocardiac region is new , with associated partial indistinctness of the left hemidiaphragm on the frontal view . There are no pleural effusions or acute skeletal findings .
    OUTPUT:
    
Focal left basilar pneumonia . Findings entered into radiology communications dashboard on ___ .