Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest radiograph was provided . Cardiomegaly is again noted with double density suggestive of left atrial enlargement , unchanged . There is indistinct appearance of the pulmonary hila suggesting central venous congestion . There is no frank alveolar edema , effusion or pneumothorax . Bony structures are intact .
    OUTPUT:
    
Stable cardiomegaly with probable left atrial enlargement with hilar congestion . No evidence of pneumonia .