Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal silhouette is unremarkable . There is central pulmonary vascular congestion with cephalization of vessels , but without frank interstitial edema . There is increased asymmetric lingular consolidation worrisome for pneumonia . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Left lingular pneumonia . Central vascular congestion without frank interstitial edema . Recommend follow up after treatment to ensure resolution .