The immunologic parameters were studied in 38 patients with hydatid di
sease of the liver and abdomen before and after a single hemoexfusion
(HE) in a volume of 400 ml. Among the patients who were examined there
were those with uncomplicated hydatid disease of the liver (group I,
second clinical stage, 25 persons), patients with suppuration of hydat
id cysts (group 11, 10 persons), and two patients with multiple hydati
d cysts complicated by their suppuration and calcification with involv
ement of large areas of the liver. Comparative analysis of immunologic
al parameters in patients before and in the first 24 hours after HE sh
owed a difference between the groups of patients and the controls. The
parameters were restored to their initial values in patients of both
groups 3-5 days after HE. The results of the study allow the conclusio
n that in screening patients with hydatid disease of the liver and abd
ominal cavity for preoperative HE a strict individual approach is nece
ssary with the patient's general condition, the clinical form of the d
isease, and complications on the part of the cysts being taken into ac
count.