PMC5010438_01
Axial view of the soft-tissue lesion with osseous destruction at the anteroinferior right-sided lamina papyracea.
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F1
High-resolution computerized tomography (CT) of the sinuses revealed a well demarcated but expansive mass of the right ethmoid sinus with erosion of the lamina papyracea (Figs. 1 and 2).
Coronal view, demonstrating erosion of the right lamina papyracea with maxillary outflow obstruction.
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F2
High-resolution computerized tomography (CT) of the sinuses revealed a well demarcated but expansive mass of the right ethmoid sinus with erosion of the lamina papyracea (Figs. 1 and 2).
CD138 immunostain, demonstrating plasma cell population within inflammatory infiltrate (anti-CD138 immunostain, original magnification x200).
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F3
Immunostain for CD138, a generic plasma cell marker, labeled >50% of the visible cells (Fig. 3) and anti-IgG4 stains of the sinus lesion demonstrated >50% of the IgG4 subclass (Fig. 4).