The patient had noticed a mass in left lower leg for 9 month. The elastic hard mass was tendency to increase its size. Magnetic resonance imaging (MRI)study demonstrated a 8×４ cm sized mass with low intensity on Tl-weighted image and high intensity on T2-weighted image, which located within subcutaneous tissue. The patient underwent wide surgical resection. Grossly, the tumor was solid and yellowish･white in color on the cut-surface.