title: US and CT findings of xanthogranulomatous pyelonephritis.
abstract: Ultrasonographic and computed tomographic findings of 21 cases of pathologically proven xanthogranulomatous pyelonephritis (XGP) in 20 patients were retrospectively evaluated. Seventeen (81%) were diffuse, and extrarenal extension occurred in 13 cases (62%). The kidney was enlarged diffusely in 12 cases (57%), and focally in 3 (14%). Urinary calculi were present in 16 cases (76%), with staghorn calculi in 4 of these, and hydronephrosis occurred in 17 (81%). In addition to typical features of XGP, the condition may also show variable imaging findings.
authors.affiliation: Department of Diagnostic Radiology, Chungnam National University Hospital, 640 Daesa-dong, Jung-gu, Taejon, 301-721, South Korea. jckim@cnuh.co.kr
authors.forename: J C
authors.initials: JC
authors.lastname: Kim
mesh_terms: D000293:Adolescent; D000328:Adult; D001707:Biopsy, Needle; D002648:Child; D002675:Child, Preschool; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D009392:Nephrectomy / Q000379:methods; D011184:Postoperative Period; D011705:Pyelonephritis, Xanthogranulomatous / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D011859:Radiography; D012189:Retrospective Studies; D012680:Sensitivity and Specificity; D012720:Severity of Illness Index; D014463:Ultrasonography