Morioka T, Nakagaki H, Matsushima T, Hasuo K
Surg Neurol. 1986 Feb;25(2):142-4. doi: 10.1016/0090-3019(86)90282-x.
A case of a spinal epidural cavernous angioma extending in the intra- and extravertebral spaces through the intervertebral foramen is presented. It was dumbbell shaped, but did not show enlargement of the intervertebral foramen, a common sign that is thought to be helpful in the diagnosis of spinal neurinoma.