Dural tail sign – thickening of the dura directly adjacent…

Dural tail sign – thickening of the dura directly adjacent to, and seemingly contiguous with, an intracranial mass. Although it may be seen in association with several different pathologies, it is classically described in meningioma being present in around 70% of cases. The tail of thickening was initially thought to result from direct tumour invasion, however it is now thought to be largely reactive in nature.

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