Presentation
Bilateral lower limb weakness.
Patient Data
The dorsal cord opposite T9/T10 vertebrae is expanded by virtue of an intramedullary lesion showing hypointense peripheral hemosiderin rim and internal heterogeneous signal of bright T1 and T2 signal giving the "popcorn appearance". No appreciable post-contrast enhancement. The lesion is surrounded by an intramedullary edema signal. Features impressive of spinal cord cavernous transformation.
Case Discussion
Typical features of spinal cord cavernoma include rounded regions of heterogeneous signal intensity on T1 and T2 weighted images due to blood products of varying ages (“popcorn appearance”), low signal intensity rim on T2 weighted images (hemosiderin), blooming effect on gradient-echo sequences (hemosiderin) and minimal contrast enhancement.
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