title: Echinococcus cyst as a cause of chest wall tumor.
mesh_terms: D000368:Aged; D004445:Echinococcosis, Pulmonary / Q000150:complications* / Q000175:diagnosis; D006801:Humans; D008297:Male; D013899:Thoracic Neoplasms / Q000175:diagnosis / Q000209:etiology*