[Retroperitoneal hygroma following nucleotomy with temporary obstruction of the ureter and common iliac vein and consequent deep venous thrombosis].

In a 40 year old male, retroperitoneal effusion occurred on the 4th day after nucleotomy. CAT scan revealed a large tumor, apparently deriving from the operated disc, bulging against ureter and later obstructing the iliac vein with consecutive deep vein thrombosis. Under close monitoring, management was conservative, including intravenous anticoagulation. Follow-up after 6 months showed complete restoration. Literature on complications of lumbar disc surgery is discussed. The presented case draws attention to the phenomenon that retroperitoneal complications may occur not only peracutely or as late complications, but also subacutely presenting with a symptom-free interval of some days.