2019 Volume 28 Issue 2 Pages 155-158
Vascular leiomyosarcomas are rare with poor prognosis. Leiomyosarcomas of veins are extremely rare, and the long-term prognosis is unclear. We report a case of a leiomyosarcoma of the femoral vein in a patient who underwent 5-year follow-up. A 75-year-old woman visited our hospital with right leg edema. Ultrasonography showed a mass in the femoral vein. Contrast-enhanced computed tomography (CT) showed a mass measuring 2×3 cm with heterogeneous enhancement of the femoral vein. We resected the tumor and the femoral vein, and she was diagnosed with primary leiomyosarcoma of the femoral vein. CT performed 3 years and 10 months postoperatively showed a low-density area in the thyroid gland. Thyroidectomy was performed, and the tumor was diagnosed as leiomyosarcoma with vertebral, lung, pulmonary vein, and cutaneous metastasis. No local recurrence was observed. However, she died of multiple organ failure 5 years postoperatively.
