“…Neoplastic examples include primary intraocular lymphoma and various periocular lymphomas, such as extranodal marginal zone lymphoma (MALT lymphoma), diffuse large B-cell lymphoma, Burkitt lymphoma, NK/T-cell lymphoma, and lymphomatoid granulomatosis [1,2,4,5,6,7,8]. Non-neoplastic examples include the conjunctival and lacrimal gland lesions of infectious mononucleosis and polymorphic B-cell LPD, which sometimes include R-S-like cells [9,10,11]. The R-S-like cells in polymorphic B-cell LPD are often positive for CD20 (a B-cell marker) and CD30 but importantly are negative for CD15 (unlike true R-S cells in most classical Hodgkin lymphomas) [9].…”