This report describes four cases of epidural defect found on myelography that illustrate some unusual causes of this defect. These include a type I chondrosarcoma, primary hemangioendothelioma, hematoma, and an epidural abscess. Surgery was performed, and all four patients have recovered with little or no remaining neurological deficit. If there is anything unusual about the epidural defect or if the clinical findings do not agree with the radiographic films, the radiologist should be alert for other, less common causes of the defect.
Carroll, Keenan L.
"The Epidural Defect on Myelography: Some Unusual Causes,"
Henry Ford Hospital Medical Journal
: Vol. 29
Available at: https://scholarlycommons.henryford.com/hfhmedjournal/vol29/iss2/8