Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable frontal chest radiograph was performed . Evaluation is limited by underpenetration from patient body habitus . Streaky atelectasis seen at the left lung base is again compatible with scarring , and better evaluated on the same day CT of the abdomen . There is no pleural effusion or pneumothorax . There is mild unchanged cardiomegaly and central congestion without overt signs of pulmonary edema . The mediastinal contours are normal . Right humeral orthopedic hardware is partially imaged .
    OUTPUT:
    
Unchanged cardiomegaly with no acute cardiopulmonary process .