Figure 3From: A multicentric, hyaline vascular variant of Castleman's disease associated with B cell lymphoma: a case report(A) Athropic germinal centers and thick walled vessels in lymphoid follicles Parafollicular areas are enlarged. (Hematoxylin & eosin stain; original magnification x 4). (B) Immunohistochemically CD20 positive areas 4x. (C) Immunohistochemically CD20 positive lymphoid malignant cells 40x. (D) A few of malign lymphocytic cells (Hematoxylin & eosin stain; original magnification x 40).Back to article page