Operative treatment of alveolar echinococcosis of the liver

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Abstract
This study is based on the experience with 51 cases of hepatic alveolar echinococcosis underwent operative treatment up to the end of 1976. Hepatic resection was carried out in 28 cases with overall operative mortality of 25 per cent, but no death occurred in the last 10 years period during which 12 cases were subjected to the procedure. This apparent improvement of the result is ascribed to the establishment of the strict criteria for operative intervention, i.e., when less than three segments are involved, the hepatic hilum is not highly involved, and the inferior vena cava is not invaded. Marsupialization is employed when hepatic resection is not indicated and the lesion shows liquefaction. Ten cases underwent the procedure with one operative death. Biliary tract reconstruction was carried out in two cases with hilar involvement, but the prognosis was poor. Eleven cases were only with celiotomy. The follow-up studies indicated that the hepatic resection offers the best hope for cure followed by marsupialization. Unlike unilocular echinococcosis in which a cyst grows expansively, the alveolar echinococcosis should be considered clinically malignant, in that it grows invasively and often shows metastatic lesions. Surgical intervention at its early developmental stage is the only definitive way of the treatment. Only recent advances in diagnostic procedures and development of type specific serological studies made it possible to bring the disease under control.

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