Granulocytic sarcoma of abdomen in acute myeloid leukemia patient with inv(16) and t(6;17) abnormal chromosome: case report and review of literature.

Granulocytic sarcoma (GS) is composed of immature granulocytic precursors and is usually found in acute myeloid leukemia (AML) patients with t(8;21). Inv(16) is rarely associated with GS comparing with t(8;21) leukemia. Here we describe an abdominal GS patient in AML-M2 with acquired translocation between chromosomes 6 and 17 and inv (16). We have also summarized 20 reported GS cases with inv(16) and found that chloroma was most often found in abdominal lesions. Intestine maybe a tissue specific target for the expression of inv(16) leukemia. Complete physical examination and molecular diagnosis are necessary for AML patients to benefit from the diagnosis and therapeutic strategy.