title: Missing pieces.
mesh_terms: D002404:Catheterization / Q000009:adverse effects*; D004617:Embolism / Q000209:etiology* / Q000517:prevention & control; D006801:Humans; D008297:Male; D008875:Middle Aged; D011095:Polyethylenes; D013902:Radiography, Thoracic
chemical_list: D011095:Polyethylenes