title: The cocaine user who looked like a bullfrog.
mesh_terms: D000328:Adult; D003042:Cocaine; D004646:Emphysema / Q000209:etiology*; D006801:Humans; D008297:Male; D008482:Mediastinum; D009333:Neck; D013352:Subcutaneous Emphysema / Q000209:etiology*; D019966:Substance-Related Disorders / Q000150:complications*
chemical_list: D003042:Cocaine