Pheochromocytoma with delayed tumor thrombus detection in renal vein: A case report

Figure 1 Abdominal magnetic resonance imaging (MRI). A: MRI revealed an adrenal tumor on the left side; B: Probable renal vein invasion.

Figure 2 Large adrenal vein during the first surgery.

Figure 3 Abdominal magnetic resonance imaging showing tumor thrombus at the root of the left renal vein.

Figure 4 Management of the tumor thrombus. A: The surface of the IVC and the left renal vein were exposed; B: The root of the left renal vein was clamped using an auricle clamp; C: The renal vein was cut; D: Both sides were sutured closely.