Mucosa-associated lymphoid tissue (MALT) lymphoma combined with tuberculous enteritis at the same site in the jejunum.

Mucosa-associated lymphoid tissue (MALT) lymphoma is derived from the marginal zone B-cell compartment and can be found at a wide variety of extranodal sites, most frequently at the gastrointestinal site. Recent clinicopathologic studies suggest a relationship between MALT lymphoma and chronic inflammatory disorders, such as Helicobacter pylori infection in the stomach or autoimmune disorders, such as Sjögren's syndrome in the salivary glands. Primary gastrointestinal MALT lymphomas most commonly arise in the stomach and less often in the small and large intestine. Recently we experienced a case who had MALT lymphoma combined with tuberculous enteritis at the same site (jejunum) confirmed by exploratory laparotomy. We suspect that there may be some relationship between MALT lymphoma and chronic inflammatory process of mycobacterial tuberculous enteritis.