Pancreatic Walled-Off Necrosis Eroding into the Inferior Vena Cava.

Walled-off necrosis (WON) is a well-known delayed local complication of acute necrotizing pancreatitis. Occasionally, WON may spontaneously rupture into the gastrointestinal tract or peritoneal cavity. However, erosion of a WON to a systemic vein has not been reported in literature so far. We report an unusual case of a 63-year-old male with acute necrotizing pancreatitis in whom WON was eroding into the inferior vena cava resulting in its thrombosis. Our patient also had a bunch of other well-described complications of pancreatitis including splanchnic venous thrombosis.