A Symptomatic Spinal Extradural Arachnoid Cyst with Lumbar Disc Herniation

Figure 2

Intraoperative photographs. A right hemilaminectomy was performed and the epidural arachnoid cyst (EAC) was exposed (a). There is a small dural defect near the middle of the posterior wall ((b), (c) arrows). Puncturing the cyst, the site of communication (valveless) was seen ((d), arrowhead). The cyst wall was completely removed and the dural defect was closed by primary suture ((e), asterisk right). The disc herniation was excised from the right side (f).

(a)

(b)

(c)

(d)

(e)

(f)