Low grade fibromyxoid sarcoma (LGFMS) is an indolent, rare soft tissue tumor having potential of late metastasis, but high local recurrence rate despite its low grade histologic findings. The morphologic diagnosis may be challenging, owing to its typically low cellularity, abundant collagen, and relatively bland cytology. We present here a rare case report of a mesenteric mass in an elderly male. The mass was excised. On microscopy, the tumor was composed of sweeping fascicles of spindle cells, which were positive for vimentin and negative for CD117, CD34, smooth muscle antigen and S-100. Herein we report a rare, under recognized case of LGFMS arising in the mesentery.
Low grade fibromyxoid sarcoma, mesentery