肾盂炎

pyelitis (medicine)

shèn = sh + (e)n4

kidney

renal pelvis (medicine)

yú = yu + Ø2

basin / wide-mouthed jar or pot

yán = y + an2

flame / inflammation / -itis

炎 = 火 : Mnemonic symbol: As I just learned "itis" is the feeling you get after eating too much.

炎 = 火 : Maud Younger ate too much just inside anthill. She's sleeping so hard that she doesn't even wake up from the fire which is spreading fast.

肾盂炎 is not used as a component in another word.

肾盂炎 currently does not appear in any sentence.