Surgical Treatment of a Chronic Brain Abscess and Growing Skull Fracture in a Dog

Figure 4

(a) Necrotic bone fragment surrounded by cavitated and inflamed neuropil. Hematoxylin and eosin ×2, scale bar = 650 μm. (b) Gram-positive cocci within the marrow space (asterisk) of the necrotic bone fragment. Gram stain ×100, scale bar = 8 μm. (c) Fibrosis (blue) of the neuropil surrounding the necrotic bone fragment (red). Masson’s trichrome stain ×4, scale bar = 400 μm. (d) Lymphoplasmacytic perivascular cuffs (arrows) and diffuse gliosis throughout the neuropil at the periphery of the sample. Hematoxylin and eosin ×10, scale bar = 175 μm.

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