Diagnosis and Surgical Treatment of Thoracic Dorsal Arachnoid Web: A Report of Two Cases

Figure 2

(a) Intraoperative findings show a membrane-like structure in the subarachnoid space. (b) Fibrous tissue seen on hematoxylin and eosin staining. (c) Epithelial membrane antigen-positive epithelial tissue is seen. (d) Calcification seen on hematoxylin and eosin staining (arrow). (e, f) On postoperative MRI, the spinal cord deviation and scalpel sign have disappeared.

(a)

(b)

(c)

(d)

(e)

(f)