Kidney and Urinary Tract Lesions

  • Dai Inoue
  • Mitsuhiro Kawano
  • Kazunori Yamada
  • Osamu Matsui
  • Toshifumi Gabata


Contrast-enhanced CT is useful in the evaluation of kidney and urinary tract lesions in IgG4-RD, but the imaging findings differ according to whether the lesion is within the renal parenchyma or ureteropelvic in location. Contrast-enhanced CT typically shows multiple poorly enhanced areas within the renal parenchyma, and in some cases renal swelling or a solitary renal mass is evident. In the ureteropelvic region, the affected part is frequently recognized as a thickened wall. The lumen of the affected part usually remains smooth. Typical cases of IgG4-RD are relatively easy to suspect and diagnose, but in atypical cases the clinical data and histopathological findings must be evaluated comprehensively before a definitive diagnosis can be rendered. Distinction between IgG4-RD and malignancies is essential in all cases, and it is therefore inappropriate to make a facile diagnosis in the absence of histopathology.


Renal Pelvis Renal Parenchyma Renal Lesion Retroperitoneal Fibrosis Excretory Phase 


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Copyright information

© Springer Japan 2014

Authors and Affiliations

  • Dai Inoue
    • 1
    • 2
  • Mitsuhiro Kawano
    • 3
  • Kazunori Yamada
    • 3
  • Osamu Matsui
    • 1
  • Toshifumi Gabata
    • 1
  1. 1.Department of RadiologyKanazawa UniversityKanazawaJapan
  2. 2.Department of RadiologyToyama Prefectural Central HospitalToyama CityJapan
  3. 3.Division of RheumatologyKanazawa University HospitalKanazawaJapan

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