Cerebellar Low Grade Astrocytoma (MR).

PROTOCOL:

T1W – Sagittal & axial scans
T2W – Axial & coronal scans
FLAIR – Axial scans 

FINDINGS:

-Evidence of small soft tissue intensity lesion is noted in the right cerebellar peduncle measuring about 17 mm (transverse) x 17.5 mm (height) x 15.3 mm (AP) diameters. It shows hypo intensity on T1& hyper intensity on T2; Gradient and Flair images while it casts restricted diffusion on both diffusion and ADC maps images (diffusion restriction here is probably due to hyper cellularity of the lesion rather than infarction). 
-It is surrounded by scanty edematous changes.
-At least 3 others tiny lesions were noted in the right cerebellar hemisphere and high up parietal lobes bilaterally.
-No significant abnormal enhancement could be elicited after contrast injection.

-The rest of the brain Parenchyma shows normal grey white matter differentiation and signal intensities.  No focal mass lesion is seen.
-Lateral and third ventricles are normal in size and position. Septum is in midline.  There is no midline shift.
-Basal cisterns, cortical sulci and gyri are normal in appearance.
-Corpus callosum shows normal MR morphology.
-Fourth ventricle is normal in size and is midline in position.


OPINION:

• Picture is suggestive of non enhancing intra parenchymal focal lesion in the right cerebellar peduncle which could be low grade astrocytoma for clinical correlation and spectroscopy if clinically indicated.


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Reported By : DR.MOHAMMED MOHYELDIN
 Consultant-Radiologist
Report Status : Validated / Validated By :  Dr.Mohammed Mohyeldin