**2.3 Immunophenotyping of MALT- lymphoma**

49 cases were analyzed. MALTI-ymphoma neoplastic elements were free from characteristic pathognomic immunological signs.


**Figure 2.**

*Lymphoepithelial lesions (LELs) as aggregations of 3 or more marginal zone cells destroying glandular epithelium.*


Expression of CD20, CD3, IgD, IgG, IgM, and Ig λ and κ light chains was studied in 35 paraffin sections:


Therefore, all paraffin sections demonstrated plasma cell polyclonality, i.e. expression of different classes of Ig without restriction of one of the chains.
