A Rare Presentation of In Situ Mantle Cell Lymphoma and Follicular Lymphoma: A Case Report and Review of the Literature

Figure 2

Immunohistochemical staining of in situ mantle cell lymphoma components. Cyclin D1 immunohistochemistry revealed a peripheral rim of positive cells within the mantle zones of the majority of the neoplastic secondary follicles ((a) 4x and (b) 20x). These cells appeared to show dim coexpression of CD5 ((c) 20x).

(a)

(b)

(c)