Low magnification (A) shows parotid infiltrated by MALT lymphoma (P) and intraparotid lymph node (LN) with preservation of normal architecture. High magnification of intraparotid lymph node follicle center (B) shows centrocytes with occasional centroblasts and absence of tingible body macrophages. Immunostaining with CD10 (C) shows absence of staining in MALT lymphoma. The lymph node follicle centers are positive and emphasize the normal nodal architecture. Expression of bcl-2 protein by the lymph node follicle centers (D) is indicative of the neoplastic nature of the follicle center cells.