EURORAD ESR

Case 2802

Bilateral xanthogranulomatous pyelonephritis (XGP) with perirenal extension: MRI findings.

Author(s)
Iannaccone R, Marin D, Celestre M, Pasqualini V, Filpo M
 
Patient
male, 57 year(s)
 
 
  • Figure 1
    HASTE T2 weighted axial and coronal images.
     

    Fluid-containing cavities are hyperintense on T2- weighted image.The surrounding cavitary borders are isointense on T2-weighted images. Note the rigth perirenal abscess.

     
    Area of Interest: unknown; Imaging Technique: HASTE T2 weighted axial and coronal images.;

    Fluid-containing cavities are hyperintense on T2- weighted image.The surrounding cavitary borders are isointense on T2-weighted images. Note the right perirenal abscess.

     
    Area of Interest: unknown; Imaging Technique: HASTE T2 weighted axial and coronal images.;
     
     
  • Figure 2
    T1 weighted images acquired with (a) and without (b) fat-suppression.
     

    Multiple hypointense cavities are evident in the fat suppressed image while the percavitary rims are hyperintense.

     
    Area of Interest: unknown; Imaging Technique: T1 weighted images acquired with (a) and without (b) fat-suppression.;

    The same cavities are hyperintense in the not suppressed image, as a finding as solid fat component of the lesion, due to the amount of xanthoma cells involved in the granulomatous process.

     
    Area of Interest: unknown; Imaging Technique: T1 weighted images acquired with (a) and without (b) fat-suppression.;
     
     
  • Figure 3
    Post-contrast T1 weighted fat-suppressed axial images.
     

    In arterial (a), portal (b) and venous (c) phases the bright enhancement of the pericavitary rims is evident, which is consistent with inflammatory hyperaemia. Note the enhancement of perirenal fascial thickening as...

     
    Area of Interest: unknown; Imaging Technique: Post-contrast T1 weighted fat-suppressed axial images.;

    In arterial (a), portal (b) and venous (c) phases the bright enhancement of the pericavitary rims is evident, which is consistent with inflammatory hyperaemia. Note the enhancement of perirenal fascial thickening as...

     
    Area of Interest: unknown; Imaging Technique: Post-contrast T1 weighted fat-suppressed axial images.;

    In arterial (a), portal (b) and venous (c) phases the bright enhancement of the pericavitary rims is evident, which is consistent with inflammatory hyperaemia. Note the enhancement of perirenal fascial thickening as...

     
    Area of Interest: unknown; Imaging Technique: Post-contrast T1 weighted fat-suppressed axial images.;
     
     
Fluid-containing cavities are hyperintense on T2- weighted image.The surrounding cavitary borders are isointense on T2-weighted images. Note the rigth perirenal abscess.
 
Fluid-containing cavities are hyperintense on T2- weighted image.The surrounding cavitary borders are isointense on T2-weighted images. Note the right perirenal abscess.
 
Multiple hypointense cavities are evident in the fat suppressed image while the percavitary rims are hyperintense.
 
The same cavities are hyperintense in the not suppressed image, as a finding as solid fat component of the lesion, due to the amount of xanthoma cells involved in the granulomatous process.
 
In arterial (a), portal (b) and venous (c) phases the bright enhancement of the pericavitary rims is evident, which is consistent with inflammatory hyperaemia. Note the enhancement of perirenal fascial thickening as well as of the perirenal inflammatory tissue adjacent to the psoas muscle.
 
In arterial (a), portal (b) and venous (c) phases the bright enhancement of the pericavitary rims is evident, which is consistent with inflammatory hyperaemia. Note the enhancement of perirenal fascial thickening as well as of the perirenal inflammatory tissue adjacent to the psoas muscle.
 
In arterial (a), portal (b) and venous (c) phases the bright enhancement of the pericavitary rims is evident, which is consistent with inflammatory hyperaemia. Note the enhancement of perirenal fascial thickening as well as of the perirenal inflammatory tissue adjacent to the psoas muscle.
 
 
 
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