Resection of pulmonary metastases from uterine sarcomas

Abstract

Long-term survival following resection of pulmonary metastases has been well documented. Variables that are believed to have an effect on survival are site of primary tumor, number and size of metastases, resectability, laterality of the metastases, doubling time, and disease-free interval. Published information regarding resection of pulmonary metastases in patients with gynecologic primary tumors is limited. We reviewed 45 patients whose pulmonary metastases from uterine sarcomas were resected at Memorial Sloan Kettering Cancer Center between 1960 and 1989. All cases met carefully defined criteria at time of thoracotomy: prior hysterectomy for uterine sarcoma, no extrathoracic tumor, known disease thought to be resectable, histology consistent with uterine sarcoma, and no medical contraindication to thoracotomy. Seventy-one percent had unilateral lesions, fifty-one percent had one lesion, and seventy percent had nodules greater than 2 cm. Thirty-six percent had incomplete resection at thoracotomy. Actuarial 5- and 10-year survival from hysterectomy for uterine sarcoma was 65 and 50%, respectively, with a mean follow-up of 89 months. Five- and ten-year survival from resection of pulmonary metastases was 43 and 35%, respectively, with a mean follow-up of 25 months. Unilateral vs bilateral disease was a significant predictor of survival after pulmonary resection (P = 0.02). Metastases size, number of metastases, disease-free interval, and patient age were not significant. Among this carefully selected group of patients undergoing resection of pulmonary metastases from uterine sarcomas, long-term survival was achieved by a substantial proportion of patients. No single risk factor is sufficiently accurate to exclude an individual patient from consideration for pulmonary resection.