Robot-assisted retroperitoneal laparoscopic excision of perirenal vascular tumor: A case report

Figure 2 Perirenal vascular tumor specimen and microscopic image. A: Grayish yellow irregular fat tissue 9 cm × 7 cm × 1.2 cm in size was visualized; B: Cystic cavity tissue of different sizes, containing eosin or red blood cells, vascular hyperplasia, partial dilatation, and deformity were observed under the microscope (HE, × 100).