Fig. 1

Magnetic resonance imaging of the cervical spine. Extramedullary, extradural, well defined, mildly heterogeneous, oval mass lesion at the level of C6 (arrows). The lesion is hypointense in T2 sagittal (A) and transverse (C), T1 sagittal (B) and mildly hyperintense in STIR. This mass is ventral and right sided, occupying ca. 70% of the vertebral canal with moderate to severe mass effect on the spinal cord that appears displaced towards the left lateral side. The mass shows a mild heterogeneous susceptibility artefact in the sagittal T2 FFE sequence (D) and minimal contrast enhancement in the T1 subtraction sequence (E). At the level of C2 the spinal cord appears increased in volume. In the CISS sequence there is a circumferential heterogeneous subarachnoideal/subdural material encircling the spinal cord with mixed hyper-hypointense areas. This material is moderate hyperintense in T2 (arrowhead, A), STIR and iso- to hypointense in T1. Very mild contrast enhancement is visible (E). Susceptibility artifact is noted