EURORAD ESR

Case 1557

Temporal lobe radiation necrosis

Author(s)
ARUN BATRA, RP TRIPATHI, S KHUSHU
 
Patient
male, 47 year(s)
 
 
  • Published 10.07.2002
  • DOI 10.1594/EURORAD/CASE.1557
  • Section Neuroradiology
  • Case Type Clinical Cases
  • Difficulty Resident
  • Views 10591
  • Language(s)
  • Figure 1
    Incidentally detected temporal lobe lesion five years after radiotherapy for parotid...
     

    Sagittal T2-weighted image reveals an area of white matter hyperintensity with heterogeneous hypointensity in the inferior portion (box).

     
    Area of Interest: unknown; Imaging Technique: Incidentally detected temporal lobe lesion five years after radiotherapy for parotid mucoepidermoid carcinoma;

    Post-contrast T1-weighted image shows an irregular focal enhancing lesion with surrounding white matter changes.

     
    Area of Interest: unknown; Imaging Technique: Incidentally detected temporal lobe lesion five years after radiotherapy for parotid mucoepidermoid carcinoma;

    Single voxel proton MR spectroscopy (TE=135ms) revealing raised choline peak and marked NAA loss. The lipid peak is seen above the baseline at 1.3ppm.

     
    Area of Interest: unknown; Imaging Technique: Incidentally detected temporal lobe lesion five years after radiotherapy for parotid mucoepidermoid carcinoma;

    rCBV map demonstrating the low vascularity of the lesion and the surrounding temporal lobe.

     
    Area of Interest: unknown; Imaging Technique: Incidentally detected temporal lobe lesion five years after radiotherapy for parotid mucoepidermoid carcinoma;
     
     
  • Figure 2
    MR imaging after 2 months
     

    Post-contrast T1-weighted image shows increase in size of the focal enhancing lesion and the surrounding white matter changes.

     
    Area of Interest: unknown; Imaging Technique: MR imaging after 2 months;

    The rCBV map still reveals low vascularity of the lesion.

     
    Area of Interest: unknown; Imaging Technique: MR imaging after 2 months;
     
     
Sagittal T2-weighted image reveals an area of white matter hyperintensity with heterogeneous hypointensity in the inferior portion (box).
 
Post-contrast T1-weighted image shows an irregular focal enhancing lesion with surrounding white matter changes.
 
Single voxel proton MR spectroscopy (TE=135ms) revealing raised choline peak and marked NAA loss. The lipid peak is seen above the baseline at 1.3ppm.
 
rCBV map demonstrating the low vascularity of the lesion and the surrounding temporal lobe.
 
Post-contrast T1-weighted image shows increase in size of the focal enhancing lesion and the surrounding white matter changes.
 
The rCBV map still reveals low vascularity of the lesion.
 
 
 
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