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

Figure 1 Preoperative angiography of the double renal artery. A: Cystic low-density shadow in the left renal hilus with a lacy edge; B: Mass adjacent to the abdominal aorta, wrapping the left side, compressing the surrounding tissue, the upper segment of the left ureter, and dilated hydronephrosis in the left kidney.

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).

Figure 3 Re-examination results of color ultrasound six months postoperatively. Both kidneys were of normal size and shape and had a clear outline. The bright spot in the left kidney did not show a posterior acoustic shadow. No dilatation was observed in the double ureters.