Quick Medical Incantation Kit

From LJ (link from a friend on IRC)...

Where Is It?
inside -- endo, eso, intra
outside -- ecto, exo
on, above, over -- epi, supra
under, below -- infra, sub

What's Wrong With It?
It hurts -- algia, dynia
It's inflamed and/or infected -- itis
It's got a tumor or swelling -- oma
It's hardening -- scler

What Are They Proposing To Do To It?
Remove it -- ectomy
Look inside it -- oscopy
Make an opening in it -- ostomy

Go read the whole list. Incredibly helpful for parsing medical terms!