title: Unusual imaging presentations in renal transitional cell carcinoma.
abstract: OBJECTIVE
  To report on unusual imaging presentations in renal transitional cell carcinoma (TCC).
  
  
  METHODS
  Imaging studies of 140 cases of pathologically proven renal TCC were retrospectively studied with the focus on unusual presentations.
  
  
  RESULTS
  Unusual imaging manifestations were found in 20 cases (14.3%). These findings were classified into 5 categories: perirenal abscesses or perirenal hematomas in 6 cases; parenchymal masses in 5; undue thickening of the hydronephrotic wall in 4; "tuberculoid" pyelograms in 3; and tumors with massive necrosis in 2.
  
  
  CONCLUSIONS
  Deceptive imaging presentations may occur in renal TCC. Recognition of these presentations may help to prevent delay in diagnosis.
authors.affiliation: Department of Diagnostic Radiology, Chang Gung Memorial Hospital, Kaohsiung, Chang Gung College of Medicine and Technology, Kaohsiung Hsien, Taiwan.
authors.forename: T Y
authors.initials: TY
authors.lastname: Lee
authors.forename: S F
authors.initials: SF
authors.lastname: Ko
authors.forename: Y L
authors.initials: YL
authors.lastname: Wan
authors.forename: Y F
authors.initials: YF
authors.lastname: Cheng
authors.forename: W C
authors.initials: WC
authors.lastname: Yang
authors.forename: H H
authors.initials: HH
authors.lastname: Hsieh
authors.forename: W J
authors.initials: WJ
authors.lastname: Chen
authors.forename: H L
authors.initials: HL
authors.lastname: Eng
mesh_terms: D000038:Abscess / Q000000981:diagnostic imaging; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001424:Bacterial Infections; D002295:Carcinoma, Transitional Cell / Q000000981:diagnostic imaging* / Q000473:pathology; D003287:Contrast Media; D005260:Female; D006406:Hematoma / Q000000981:diagnostic imaging; D006801:Humans; D006869:Hydronephrosis / Q000000981:diagnostic imaging; D007674:Kidney Diseases / Q000000981:diagnostic imaging / Q000382:microbiology; D007680:Kidney Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D009336:Necrosis; D011856:Radiographic Image Enhancement; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed; D014398:Tuberculosis, Renal / Q000000981:diagnostic imaging; D014567:Urography
chemical_list: D003287:Contrast Media