Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A radiopaque skin marker is seen along the anterior seventh intercostal space , near the costochondral junction . Lung volumes are slightly low . The lungs are clear . The heart size is normal . There are no pleural effusions . No pneumothorax is seen . There is no definite acute rib fracture . Herniorrhaphy tacks are seen in the mid abdomen .
    OUTPUT:
    
1 . No acute cardiac or pulmonary process . 2 . No definite rib fracture , although this study is not technically adequate to exclude a non-displaced anterior rib fracture . Additionally , the position of the skin marker indicates the patient 's pain is near the costochrondral junction , a site which is difficult to evaluate with conventional radiography .