The absence of genetic translocation of API2-MALT1 was confirmed with fluorescence in situ hybridization (FISH).     ///    Helicobacter pylori-negative / API2-MALT1 translocation-negative low-grade MALT lymphoma..     ///    "pylori-negative and API2-MALT1 translocation-negative low-grade MALT lymphoma is unknown, and a standard treatment for such lymphoma has yet to be defined. "    ///     A 71-year-old man with a Helicobacter pylori infection-negative and API2-MALT1 translocation-negative extranodal marginal-zone B-cell lymphoma of mucosa-associated lymphoid tissue (MALT) type of the stomach has been followed conservatively for over 5 years. 