Pathologic findings (hematoxylin and eosin stain). A) Low-power photomicrograph of the tumor demonstrating fibrous and myxocollagenous areas. The tumor border is well defined. Fibrous area demonstrates wavy and dense collagen fibers. Cellularity is very low, consisting of spindle-shaped and stellate tumor cells. B) High-power photomicrograph of the area showing a myxocollagenous stroma, demonstrating benign-appearing spindle cells presenting higher cellularity than in the fibrous area.