Meningoencephalitis with Streptococcus equi Subspecies equi Leading to a Dural Arteriovenous Fistula

Figure 3

Histopathology of the excised dura with lymphocytic inflammatory remnants around a damaged venous sinus (a). In the upper part of the vessel wall (see also insert (b)) there is granulation tissue with many newly formed capillaries, lymphocytes, macrophages (thick arrow), a few eosinophils (thin black arrow) and some iron debris (thin open arrow). (Haematoxylin-Eosin Staining, bar = 1 mm; asterisk = peripheral blood).

(a)

(b)