Hepatic versus pulmonary involvement by Echinococcus granulosus.

In a five period, year 41 consecutive patients with echinococcosis were studied. Single organ involvement occurred in 34 (82.93%) and multiple organ disease in seven patients (17.07%). Single hepatic involvement, recorded in 15 patients (36.59%) was equal to single pulmonary involvement. This distribution appears to assume an intermediate position between the northern preponderance of hepatic and the southern prevalence of pulmonary echinococcosis in Iran.