The feasibility of application of indirect lower lymphoscintigraphy (ILLSG) was assessed in 202 patients with Hodgkin's disease. Its high diagnostic potential was demonstrated by comparison with direct X-ray contrast lymphography: ILLSG's sensitivity was 91.5%, specificity--76.1% and overall accuracy--88.4%. The procedure used for topometric preparation prior to exposure of paraaortal and ileaco-inguinal lymph nodes proved instrumental in designing individual irradiation fields: their boundaries were altered in 21.6% on the basis of ILLSG data.