Letter: Casoni skin test for hydatid disease.
D004443:Echinococcosis / Q000175:diagnosis*; D004444:Echinococcosis, Hepatic / Q000175:diagnosis; D004445:Echinococcosis, Pulmonary / Q000175:diagnosis; D005189:False Positive Reactions; D006801:Humans; D007428:Intradermal Tests / Q000379:methods; D012698:Serologic Tests; D012882:Skin Tests