1: Hyperechoic mass in the skin layer of the left buttock (the biggest mass) by the transversal axis (Fig. 1A) and longitudinal axis(Fig. 1B) of ultrasound
Fig. 2: Abundant blood flow signals seen within the mass ( Fig. 2A), and low-velocity, low-obstruction artery blood flow spectrum detected from blood signals(Fig. 2B).
Fig. 3: Haematoxylin-eosin staining revealing an abundant foamy macrophages with fibrosis and cholesterol clefts(original magnification×400) (Fig. 3A), and Immunohistochemistry staining revealing a positive expression pattern: S-100 (-), Leu-7 (-), Desmin (-), SMA (-), inhibin (-), CD68 (+) (Fig . 3B)