[Xanthogranulomatous pyelonephritis presenting a subcutaneous mass in the lower abdomen: a case report].
A 72-year-old female presented with the complaint of left lower abdominal swelling in May, 2005. Laboratory analysis revealed elevated white blood cell counts and C-reactive protein. Abdominal computed tomography showed left ureteral calculi, left hydronephrosis and a mass extending through the perinephric space, psoas major muscle into the left flank and lower abdomen. Echo-guided needle mass biopsy was performed. Histopathological findings revealed xanthogranulomatous changes. Under the diagnosis of diffuse xanthogranulomatous pyelonephritis extended into psoas muscle and subcutaneous tissue, antibiotic therapy was given for 5 months. After reduction of subcutaneous mass, left nephroureterectomy was performed. Histopathological findings revealed xanthogranulomatous pyelonephritis and ureteritis. Postoperative course was uneventful without any relapse of inflammation.
Sawazaki
Harutake
H
The Department of Urology, Kyoto University Graduate School of Medicine.
Segawa
Takehiko
T
Yoshida
Kenji
K
Kawahara
Takashi
T
Inoue
Takamitsu
T
Soda
Takeshi
T
Kanba
Tomomi
T
Yoshimura
Koji
K
Takahashi
Takeshi
T
Nakamura
Eijiro
E
Nishiyama
Hiroyuki
H
Ito
Noriyuki
N
Kamoto
Toshiyuki
T
Ogawa
Osamu
O
D000005:Abdomen; D000368:Aged; D005260:Female; D006801:Humans; D011705:Pyelonephritis, Xanthogranulomatous / Q000175:diagnosis* / Q000473:pathology