Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Given for differences in marked rotation , tracheostomy tube remains in good position . Moderate left - sided effusion is largely unchanged with associated retrocardiac opacity . Mild vascular congestion also persists , and given for differences in technique has not significantly changed . Mild to moderate cardiomegaly . Support devices are unchanged .
    OUTPUT:
    
Mild pulmonary vascular congestion and moderate left effusion , given for differences in technique have not significantly changed .