Fig. 5.

Rarity of rim and flame signs in primary cord masses. Only 4 primary cord masses demonstrated 1 of the signs, all shown here; none displayed both signs. Axial postcontrast T1-weighted image (A) in a 70-year-old man with a hemangioblastoma with a partial rim sign (arrows). Sagittal postcontrast T1-weighted images in a 20-year-old woman (B) with a thoracic hemangioblastoma with a partial rim sign (arrows), a 26-year-old man (C) with a thoracic WHO grade II ependymoma with a flame sign superiorly (arrow), and a 21-year-old man (D) with a cervicothoracic WHO grade I pilocytic astrocytoma with a flame sign inferiorly (arrow).