Macroscopic and microscopic findings of the lesion. (a) Macroscopic finding of the tumor. The tumor measured 7.5 cm and had a relatively clear margin. The cut surface of the tumor was smooth, homogeneous, and gray-white without necrosis or hemorrhage. (b) Microscopic findings of the lesion (hematoxylin and eosin stain, ×200). The tumor was composed of spindle cells and blood vessels with myxoid stroma.