EURORAD ESR

Case 14877

Tuberculosis – the master masquerader – presenting as posterior fossa mass lesions

Author(s)
Dr. Zalak J Panchal1, Dr. Jyoti Gupta2

(1) Resident Doctor,
(2) Resident Doctor,
Radiology Department,
B.J. Medical College,
Civil Hospital Ahmedabad,
Gujarat, India

Email:jyotigupta99@gmail.com
 
Patient
male, 2 year(s)
 
 
  • Figure 1
    MRI brain T2-weighted image

    Plain T2WI axial image shows lobulated heterogenously hypointense lesion in the posterior aspect of cerebellum.

     
    Area of Interest: Head and neck; Imaging Technique: MR; Procedure: Computer Applications-General; Special Focus: Infection;
     
     
  • Figure 2
    MRI brain T1 weighted image

    On T1WI the lesion appears iso to hyperintense to surrounding brain parenchyma.

     
    Area of Interest: Head and neck; Imaging Technique: MR; Procedure: Computer Applications-General; Special Focus: Infection;
     
     
  • Figure 3
    MRI brain T2 weighted image

    Plain T2WI sagittal image shows a lesion in the cerebellum and resultant upstream obstructive hydrocephalus due to mass effect of the lesion.

     
    Area of Interest: Head and neck; Imaging Technique: MR; Procedure: Computer Applications-General; Special Focus: Infection;
     
     
  • Figure 4
    MRI brain - post contrast image

    On post contrast study, the lesion shows ring enhancement.

     
    Area of Interest: Head and neck; Imaging Technique: MR; Procedure: Computer Applications-General; Special Focus: Infection;
     
     
  • Figure 5
    MR Spectrocopy

    MR Spectroscopy shows elevated lipid lactate peak, reduced NAA level and reduced NAA/Cho ratio

     
    Area of Interest: Head and neck; Imaging Technique: MR; Procedure: Computer Applications-General; Special Focus: Infection;
     
     
Plain T2WI axial image shows lobulated heterogenously hypointense lesion in the posterior aspect of cerebellum.
 
On T1WI the lesion appears iso to hyperintense to surrounding brain parenchyma.
 
Plain T2WI sagittal image shows a lesion in the cerebellum and resultant upstream obstructive hydrocephalus due to mass effect of the lesion.
 
On post contrast study, the lesion shows ring enhancement.
 
MR Spectroscopy shows elevated lipid lactate peak, reduced NAA level and reduced NAA/Cho ratio
 
 
 
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