Presentation
History of sinonasal inverted papilloma and incidental cerebellar lesion on CT-scan.
Patient Data



T2/FLAIR hyperintense lesion in the left cerebellar hemisphere showing two components: a very T2 hyperintense rounded area with well defined margins and a more medial ill defined area of hyperintensity. The lesion shows no enhancement after contrast administration.
Case Discussion
The lesion was surgically removed and the presence of Lhermitte-Duclos disease (dysplastic cerebellar gangliocytoma) was confirmed by pathology. This lesion has a very atypical appearance without the classic features of dysplastic cerebellar gangliocytoma consisting of widened cerebellar folia and striated pattern.