spade field

(1) Abdominal spade field A field of radiation therapy that encompasses the splenic pedicle, para-aortic and common iliac lymph nodes; double thickness lead shields are placed over gonads and pelvic structures—bladder, rectum, uterus
(2) A widened inferior aspect of the craniospinal irradiation field which encompasses the sacroiliac joints and covers the sacral nerve roots
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

spade field

Spade port Radiation oncology A field of RT that encompasses the splenic pedicle, para-aortic and common iliac lymph nodes; double thickness lead shields are placed over gonads and pelvic structures–bladder, rectum, uterus. See Radiation therapy.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.