Figure 17d. Hodgkin disease in a 46-year-old man. (a) Lymphogram obtained during the nodal phase shows disseminated involvement of the abdominopelvic lymph nodes. (b) Staging abdominal CT scan, obtained with intravenous contrast material 1 hour before lymphography, shows small (short-axis diameter < 10 mm) paraaortic and paracaval lymph nodes at the L3 level. There was a favorable outcome at 2- and 6-month follow-up lymphography. (c, d) Lymphograms show that the clear demonstration of opacified lymph nodes makes design of the inverted Y field for irradiation easy and more accurate (c) and considerably reduces the field of radiation therapy (d).