Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright radiograph of the chest demonstrates low lung volumes , which results in bronchovascular crowding . The patient has an atypical position in this radiograph , which limits interpretation of this study . Atelectasis is seen at the bilateral bases , left worse than right . The cardiac silhouette appears mildly enlarged . There is no pulmonary edema , pneumothorax , definite pleural effusion , or consolidation .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . Bibasilar atelectasis .