[Improved demonstration of normal lymph nodes in lymphangiograms (author's transl)].

Lymphography with Lipiodol ultra fluid was carried out in eight domestic pigs. The purpose of the experiment was to obtain even distribution of the oil in normal lymph nodes in order to improve its diagnostic value. This was attempted by changes in pressure, temperature and by the addition of benzopyrone. By increasing injection pressure from 0.4 to 0.8 atmospheres, using a pump, it was possible to show more of the lymphatic tissue. Whether this would be possible in man is still not certain. The use of a benzopyrone preparation also improved contrast distribution in lymph nodes. Additional pelvic lymphatics were also seen. The improved distribution of oil is indicated by the altered pattern, strikingly even filling of the vacuoles and 10% incfreased filling rate.