Renal Angiomyolipoma Mimicking a Well-Differentiated Retroperitoneal Liposarcoma

Figure 3

Histopathological findings. (a) Hematoxylin–eosin stain (×40). The tumor consisted of mature adipose tissue, smooth muscle cells, and thick-walled abnormal vessels. (b) Immunostaining for HMB45, a marker of angiomyolipoma, was positive in the tumor cells (×200).

(a)

(b)