RARE PRESENTATION OF LHERMITTE-DUCLOS DISEASE

Abstract
Lhermitte-Duclos disease (LDD) arises from an uncommon benign lesion which alters the normal cerebellar laminar pattern. This case report shows the imaging ndings of this condition in 39 year-old male, presented with history of headache and dizziness for duration of ten days. Intial assessment included a non-contrast CT which showed a mass in left cerebellar hemisphere with surrounding mass effect. MRI multiplanar sequences showed a well dened T2 hyperintense lesion with a tigroid appearance.The lesion showed a mild bright signal on diffusion-weighted images, whereas MR Spectroscopy shows reduced choline levels. Differential diagnosis in terms of imaging include subacute infarct, cerebellitis, glial tumor,encephalitis but these do not give the classical tigroid appearance on MRI. Lack of contrast enhancement , signicant diffusion and cellularity of the lesions can help in differentiating among them.