“…2 IP is usually positive for vimentin, EMA, CD138, CD20, CD68, and negative for S100 in immunohistochemical staining. 1 Patients present with fever, weight loss, hypergammaglobulinemia, growth retardation, thrombocytosis, iron deficiency anemia, symptoms related to mass effect, or a combination of these. Differential diagnosis includes carcinoma, fibrodysplastic lesions, lymphoma, chronic fungal infection, Wegener's granulomatosis, extramedullary plasmacytoma.…”