noun
pyelonephritis
Medical term for a bacterial infection of the kidney pelvis and kidney tissue. Often used in clinical contexts.
腎盂腎炎は、発熱や背部痛を引き起こすことがあります。
Pyelonephritis can cause fever and back pain.
膀胱炎 is cystitis (bladder infection), while 腎盂腎炎 is a more serious upper urinary tract infection involving the kidney.
Compound of 腎盂 (renal pelvis) and 腎炎 (nephritis). The exact historical derivation is uncertain; the spelling is conventionally associated with the medical condition.