para-aortic field
para-aortic/hepatic field
Para-aortic/hepatic port Radiation oncology A field of RT that encompasses the splenic hilar and para-aortic lymph node chains and the entire right lobe of the liver–through a 50% transmission lead block, often joined across another 'gap' by a separate pelvic field. See Radiotherapy.McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.