PMC6416759_01
(a) The patient underwent resection of the lesion for microbiological and histopathological examination. Histopathological examination of the brain specimen demonstrated thin, branching organisms of about 1-micron thickness, consistent with Nocardia species on hematoxylin and eosin staining (original magnification, x40). (b) Grocott staining revealed thin, filamentous, and ramifying argyrophilic bacteria (original magnification, x40)
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F1
Diffusion-weighted imaging (DWI) showed restricted diffusion [Figure 1].
(a and b) T1-enhanced axial, sagittal magnetic resonance image showing infratentorial lesion affecting deep structures, including the cerebellar vermis. The lesion is juxtaventricular (fourth ventricle), but not cause obstructive hydrocephalus. (c) Fluid-attenuated inversion recovery demonstrated brain edema around the lesion. (d) Diffusion-weighted image showing a restricted lesion of abscess
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F2
A microbiological investigation of the diagnosis was made using the Gram and Grocott stains of the surgical specimens [Figure 2].
Brain magnetic resonance imaging performed 1 year after the surgery shows disappearance of the inflammatory tissue and purulent collection
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F3
After 1 year of treatment, MRI revealed no brain abscesses [Figure 3].