Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is top normal . Mediastinal and hilar silhouettes are unremarkable . Lung volumes are low , accentuating the cardiopulmonary vasculature . There are increased reticular markings , particularly at the lung bases suggestive of edema or aspiration . There is no pleural effusion or pneumothorax . No definite fracture is identified .
    OUTPUT:
    
1 . Increased reticulation particularly at the bases likely representing edema . A component of aspiration is less likely . 2 . No definite fracture . If needed , a dedicated rib series may be performed to further assess .