Bilateral Ganglion Cysts of the Ligamentum Flavum in the Cervical Spine Causing a Progressive Cervical Radiculomyelopathy and Literature Review

Figure 1

Magnetic resonance imaging (MRI) findings of bilateral ganglion cysts of the ligamentum flavum at C7/T1.

(a) A T2-weighted, axial MRI image showing bilateral ganglion cysts (arrows) of the ligamentum flavum at C7/T1. The rim of the cyst shows low signal intensity connected to the low signal intensity in the ligamentum flavum, and the cyst’s contents were heterogenous, with both high and low signals on the left side

(b) A T2-weighted, sagittal MRI image showing the ganglion cyst (arrow) of the ligamentum flavum at C7/T1. Note the mild anterior subluxation of C7 to T1 (asterisk)

(c) An axial T1-weighted, enhanced MRI image showing variable, contrast enhancement of the cyst wall (arrows)