Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left subclavian central venous catheter appears to be malpositioned with the tip not crossing midline , projecting over the region of the carina , likely arterial in location . There is no pneumothorax . Low lung volumes are present . Heart size is difficult to assess but is likely mildly enlarged . Aorta is tortuous and diffusely calcified . There is crowding of bronchovascular structures and prominence of the hila bilaterally . Streaky bibasilar airspace opacities likely reflect atelectasis . Infection can not be excluded . Right hemidiaphragm appears mildly elevated .
    OUTPUT:
    
1 . Left subclavian central venous catheter appears malpositioned , likely intra-arterial . This finding was initially discussed by phone with Dr . ___ at 8 : 13 PM , ___ and Dr . ___ ___ at 10 :00 PM , ___ . 2 . Low lung volumes with probable bibasilar atelectasis .