Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable upright frontal chest radiograph demonstrates bilateral interstitial markings with cephalization of vessels and central vascular engorgement . Obscuration of bilateral diaphragmatic angles may represent bilateral small pleural effusions , although a component of atelectasis or a consolidation can not be excluded . There is no pneumothorax . Heart size is enlarged . Visualized osseous structures are without acute abnormality .
    OUTPUT:
    
Vascular congestion and interstitial markings compatible with interstitial edema . Obscuration of bilateral costophrenic angles compatible with pleural effusions , although component of atelectasis or focal consolidation can not be excluded .