Granulocytic sarcoma of mesentery in acute myeloid leukemia with CBFB/MYH11 fusion gene but not inv(16) chromosome: case report and review of literature..     ///    "These observations suggest that when abdominal GS is diagnosed, an analysis of the CBFB/MYH11 fusion gene is necessary to make an appropriate decision regarding treatment options, even if no chromosomal abnormalities are found.. "    ///    "The chromosomal analysis was normal, but molecular analysis detected the CBFB/MYH11 fusion gene in the blasts. "