Figure 1.

a, Magnetic resonance imaging shows the tumor (large asterisk) lying to the left of the superior mesenteric artery (SMA), involving the distal pancreas anteriorly, the superior pole of the left kidney posteriorly, and extending into the inferior vena cava (IVC) (small asterisk). b, The tumor (large asterisk) involves and encases the left renal vein and extends into the IVC. SMA indicates superior mesenteric artery.