[A complication during kyphoplasty. Cement penetration through the azygos vein into the superior vena cava].

A 59-year-old woman had a nontraumatic osteoporotic fracture of the seventh thoracic vertebral body. Despite correct operative technique, in the course of kyphoplasty cement was dislocated through the segment vein into the azygos vein and from there into the superior vena cava. The patient was free of cardiopulmonary symptoms throughout. Oral anticoagulation was administered for 3 months to prevent thromboembolism, and regular clinical and echocardiographic follow-up examinations were also performed during this period.