[Large liver cyst with compression of the inferior vena cava causing massive deep vein thrombosis].

A 69-year-old female was admitted to hospital on suspicion of left-sided deep vein thrombosis (DVT). DVT stretching to the distal part of the vena cava inferior (VCI) was confirmed on computed tomography and ultrasound which also revealed a large cyst with compression of VCI. The patient had no predisposition or risk factors to venous thromboembolic disease. The DVT was initially successfully treated with warfarin and aspiration of the cyst. However, it reappeared only 11 months later. Other treatment options are aspiration and ethanol sclerosis or surgery, laparoscopic as well as traditional.