[Lymphocyte subpopulations and their functional activity in patients with brain tumors].

The authors studied a complex of immunological indices in 69 patients with brain tumours in the pre- and postoperative period. It is shown that in patients with benign brain tumours, preoperative care and surgical intervention largely alter the functional activity of T and B-lymphocytes while patients with malignant tumours of the brain revealed less pronounced changes of quantitative indices of definite subpopulations of lymphocytes against the background of marked reduction of their functional activity. The necessity is emphasized of complex evaluation of immunological indices in patients with brain tumours.