PMC5379818_01
MRI showing expansile osseous lesion seen along the floor of posterior cranial fossa involving the posterior portion of right petrous temporal bone
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F1
Magnetic resonance imaging (MRI) brain showed an expansile osseous lesion (32 x 16 mm) seen along the floor of posterior cranial fossa, predominantly involving the posterior portion of right petrous temporal bone [Figure 1].
CT-Temporal bone showing locally destructive lesion involving the right mastoid air cells with disruption and erosion of the right temporal bone
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F2
Computed tomography (CT) - temporal bone showed a locally destructive lesion involving the right mastoid air cells with complete disruption of the middle and inner ear anatomy and marked erosion of the affected bone [Figure 2].
Microphotograph showing diffuse sheets of plasma cells. (Hematoxylene and Eosin stain)
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F3
Histopathology revealed plasmacytoma with immunohistochemistry positive for CD 138 [Figures 3 and 4].
Immunohistochemisty for CD 138 showing strong positivity in tumor cells
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F4
Histopathology revealed plasmacytoma with immunohistochemistry positive for CD 138 [Figures 3 and 4].