Flame sign (spinal cord metastasis)

Last revised by Frank Gaillard on 19 May 2019

The flame sign has been described as a helpful MRI sign of spinal cord metastases, enabling them to be distinguished from other enhancing spinal cord lesions (e.g. ependymoma, astrocytoma and hemangioblastoma) 1

Radiographic features


The flame sign is seen on sagittal post contrast T1 weighted imaging of the spinal cord and appears as an ill-defined triangular extension of enhancement above and/or below the lesion (continuous with the rim sign) 1

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