寄生虫学：cestode-II 双语(2015).ppt

思考题 那些是人畜共患的寄生虫病（parasitic zoonoses） 包虫病常被称作“牧区癌症”？为什么 * * * * Surgical Science . Vol.4?No.1(2013), Article ID:27026,9 pages DOI:10.4236/ss.2013.41004 * ydatid cysts are caused by the parasite Echinococcus granulosus and are usually characterized by cystic lesions of the liver and lung. A giant hydatid cyst can be defined as a huge, complicated lesion with possible severe systemic symptoms. We report an 18-year-old man admitted to the hospital with non-specific symptoms who was diagnosed with a lingular giant hydatid cyst and treated successfully with surgery. Hydatid cysts are caused by the parasite?Echinococcus granulosus?and are usually characterized by cystic lesions of the liver and lung. Rarely, the cysts may be elsewhere in the body.1,2?Hydatid disease is endemic in many countries, especially in Turkey, where the prevalance is 50–400 per 105?and the incidence is 3–4 per 105.3?Hydatid cysts can cause serious health problems, especially in eastern and southerneastern regions of Turkey where veterinary and preventive medical services are inadequate. Hydatid cysts may lead to severe complications by means of vital organ compression or rupture into the bronchus or pleural cavity. Because of these possible complications, hydatid cysts must be treated urgently.4–6?We report the case of an 18-year-old man who was operated on for a lingulary giant hydatid cyst occupying all of the left hemithorax. An 18-year-old male was admitted to State Hospital Hakkari with progressive chest pain on the left side, dry cough and progessive dyspnea, especially when lying down. He had had the complaint for about one year. No respiratory noises were heard in the middle and lower zones of the left hemithorax by auscultation. The physical examination was otherwise normal. The chest x-ray revealed a round, well-shaped lesion with dense homogeneous opacity filling the middle and lower lobes of the left lung, which could readily be distinguished from the lung tissue (Figure 1). Figure 1?