Nonleukemic myeloid sarcoma presenting as intussusception of small bowel in a male patient: An unusual presentation

Myeloid sarcoma (MS) is an extramedullary tumor of the myeloid cells and usually develops in lymphoid organs, bones, skin, adipose tissue, and the central nervous system. Gastrointestinal or isolated mesenteric involvement is an extremely rare without bone marrow (BM) involvement. Only a few cases had reported before. In this paper, we report a case of a 37-year-old male who presented with small bowel intussusception due to mesenteric MS. Abdominal computed tomography findings revealed intussusception of the small bowel in the left lower quadrant of the abdomen and mesenteric masses. The patient underwent operation, and masses were excised with segmental small bowel and segmental colon resection because the masses were adjacent to the bowel wall. Histopathology and immunohistochemistry showed MS in mesentery. Patient received 2 cycles of cytosine arabinoside combined with idarubicin chemotherapy in the postoperative period and was doing well at 6 months of follow-up. MS in mesentery presenting as intussusception of small bowel without BM involvement is very rare and it should be considered in the differential diagnosis of intestinal obstruction.