Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single portable semi-erect chest radiograph was obtained . Low lung volumes accentuate the pulmonary vasculature . Moderate cardiomegaly is unchanged . The costophrenic angles are blunted . There is no focal consolidation or pneumothorax . There is no new abnormal cardiac and mediastinal contour .
    OUTPUT:
    
Stable cardiomegaly . Presence of small pleural effusions is difficult to discern without a lateral projection .