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

Figure 2

Intraoperative photograph showing the ganglion cyst of the ligamentum flavum.

(a) An intraoperative photograph showing the outer wall of ganglion cyst (arrows) at the right side of C7/T1. The ligamentum flavum was bulged with the cyst, and the lateral margin of the dura (asterisk) was compressed. The cut edge of the facet (arrowheads)

(b) After the outer wall of the ligamentum flavum cyst was cleared, a degenerated cystic portion was found (arrow). The underlying dura (asterisk) was dissected and decompressed

(c) A histologic specimen showing the absence of synovial cell lining of the inner cystic wall (×40, H & E stain)