title: Two-penny aspiration: unusual complication of a metered-dose inhaler.
mesh_terms: D000336:Aerosols; D001980:Bronchi; D001993:Bronchodilator Agents / Q000008:administration & dosage*; D005547:Foreign Bodies / Q000209:etiology*; D006801:Humans; D001239:Inhalation; D008297:Male; D009921:Metaproterenol / Q000008:administration & dosage; D008875:Middle Aged; D012119:Respiration
chemical_list: D000336:Aerosols; D001993:Bronchodilator Agents; D009921:Metaproterenol