Figure 2.

(A-B) axial T1WI and turbo flash image. (C) sagittal T1WI of the initial MRI of patient No 5 show methemoglobin at the C5 root exit with high signal intensity on T1WI and extremely low signal intensity on turbo flash images (arrows). Prior to surgery a new MRI (D-F) coronal STIR, sagittal T2WI and axial turbo flash image showed development of pseudomeningocele (intradural cysts) along the nerve roots at several levels (arrows). Despite these findings the roots were found to be intact (axonotmesis) on exploration (false positive MRI-finding).