Plasmacytoid Melanoma of the Urinary Bladder and Lymph Nodes with Immunohistochemical Expression of Plasma Cell Markers Revealing Primary Esophageal Melanoma

<table>(a) Neoplastic cells exhibit immunoreactivity for CD138 (×100). (b) Very rare neoplastic cells are positive for S100 protein (×100). (c) Strong HMB45 expression by the neoplastic cells (×40). (d) Neoplastic cells are positive for lambda light chain and negative for kappa light chain (×100).</table>

Case Reports in Pathology

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Figure 3

Figure 3: Plasmacytoid Melanoma of the Urinary Bladder and Lymph Nodes with Immunohistochemical Expression of Plasma Cell Markers Revealing Primary Esophageal Melanoma 

Figure 3 | Plasmacytoid Melanoma of the Urinary Bladder and Lymph Nodes with Immunohistochemical Expression of Plasma Cell Markers Revealing Primary Esophageal Melanoma 