The best replacement for abdomen is stomach.

The best alternatives to abdomen are rated as following:
★★★★★  stomach
★★★  groin
★★★  abdominal
★★★  pelvis
★★  thorax
★★  chest
★★  waist
★  belly
★  waist measurement
★  ct scan
★  in the groin
★  pelvic
★  mrcp
  mri abdomen
  ct abdomen
  ct
  lower back
  soft abdomen
  wound dehiscence
  upper

Your alternative for abdomen is not listed? Suggest!
Speaking about abdomen, one probably shouldn't forget about contrast.

Other search terms related to abdomen and their ratings are:
★★★★★ contrast
★ contrast ct
and without contrast
You have in mind a companion for abdomen and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of abdomen in all years. Click on graph for more.
abdomen
stomach
groin