Abstract：
Levonorgestrel releasing intrauterine system have excellent contraceptive efficacy with simultaneous lowering of menstruation\'s blood loss. It could be used for therapy of endometrial hyperplasia in perimenopause. In position of gestagen part of the hormone replacement therapy it has high control of endometrial proliferation. It is conjoined with the zero increasing of risk of thromboembolic disease in combination with transdermal oestrogen\'s application.
摘要：
左炔诺孕酮宫内缓释系统具有优异的避孕效果，同时降低月经的失血量。可用于围绝经期子宫内膜增生的治疗。在激素替代疗法的孕激素部分的位置，它对子宫内膜增殖具有高度控制。与经皮雌激素的应用相结合，血栓栓塞性疾病的风险为零增加。
