Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes remain low . The cardiac , mediastinal and hilar contours are stable , although it is difficult to resolve the cardiac contour . There is a new perihilar fullness , upper zone re-distribution , and hazy opacity suggesting pulmonary vascular congestion . In addition , the left hemidiaphragm is more obscured suggesting that possibly there is a developing left lower lobe or lingular process . There is no pneumothorax .
    OUTPUT:
    
Findings suggesting mild vascular congestion as well as a potential focal process developing in the left lower lobe . Standard PA and lateral radiographs could be helpful to evaluate further if clinically indicated versus a short - term followup radiograph and clinical correlation .