It is well known that gastric mucosa-associated lymphoid tissue (MALT) lymphomas are associated with Helicobacter pylori infection and have a good prognosis. However, although rare, these low-grade lymphomas transform to the high-grade diffuse large B-cell lymphomas (DLBCLs) which are thought to be the important cause of death in patients with MALT lymphoma. We report two cases of DLBCLs in the cervical lymph nodes that occurred 10 years and 1.5 years after diagnosing low-grade gastric MALT lymphomas.

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• Primary Pulmonary Diffuse Large B Cell Non-Hodgkin’s Lymphoma: A Case Report and Literature Review
  Ziqiang Zhu, Wei Liu, Omar Mamlouk, James E. O'Donnell, Debabrata Sen, Boris Avezbakiyev
  American Journal of Case Reports.2017; 18: 286.     CrossRef