title: Perichondritis helicis: an industrial hazard--two case reports.
mesh_terms: D000328:Adult; D002356:Cartilage; D009783:Dermatitis, Occupational / Q000139:chemically induced*; D004427:Ear Diseases / Q000139:chemically induced*; D004431:Ear, External; D006801:Humans; D008297:Male; D012408:Rubber; D013890:Thiourea / Q000506:poisoning
chemical_list: D012408:Rubber; D013890:Thiourea