TNFSF13 and MALT lymphoma: In contrast, lacrimal gland lesions in MALT lymphoma patients exhibited high expression of CD20 and secreted APRIL, with a mean of 4109.44 cells/HPF (range: 2905.00–4927.00 cells/HPF) and a mean of 2950.78 pixels/HPF (range: 699.00–4541.00 pixels/HPF) (Figure 2).