Figure 6.

Preoperative and postoperative magnetic resonance (MR) images in a patient with von Hippel–Lindau (VHL) syndrome (a,b). The axial plan postcontrast portal venous phase and T1-weighted images show a preoperative lesion (white arrow) in the upper pole of the right kidney, in close proximity to renal vascular structures (yellow arrowhead) and the intestine (white arrowhead) (c,d). The axial postcontrast portal venous phase and subtracted T1-weighted images show no residual lesion in the tumor bed (yellow arrow) after laparoscopy-assisted ultrasound-guided perioperative microwave ablation therapy.