Except neither of those citations mention demyelination.
Maybe this paper is a little more suited to you:
http://www.nature.com/modpathol/journal ... 0350a.html
Venous congestive myelopathy: a mimic of neoplasia
Given their small size, the spinal cord biopsies frequently showed distortion of architecture. Gliosis and mild glial atypia were often seen (57%) (Figures 2, 3, 4 and 5). In all cases, there was an increased number of small vessels with markedly hyalinized vascular walls (Figures 2 and 5). There was frequently (71%) a relative myelin loss as best demonstrated on LFB/PAS (Figure 5b). Neurofilament stains showed axonal loss only in the two cases featuring necrosis. The findings were not those seen in primary demyelination given the following observations: hemosiderin deposition, predominantly perivascular and indicative of previous bleeding, was commonly seen (71%) (Figures 2b, inset and 5c). Scattered Rosenthal fibers were present in some cases (43%) (Figures 3b and 5e). Vascular thrombosis and necrosis were seen each in two cases (29%) (Figure 4). Vascular thrombosis was the only feature seen exclusively in patients found subsequently to have a spinal dural arteriovenous fistula (two of three patients). Vessel wall calcification was not observed in any of the cases. The distribution of these various findings is summarized in Table 2 .