CD40LG and MALT lymphoma: The Chinese literature reported the clinical features of 16 patients with MALT lymphoma, 6 of 16 patients with M proteinemia, and 4 of 6 patients were IgM type (3 cases of Kappa light chain, 1 case of Lambda light chain), 2 cases were IgG type (both K light chain).[11] It is known that MALT lymphoma possesses unique clinicopathological features.