 One hundred and thirty six anovulatory women with CC-resistant PCOS were scheduled randomly into two equal groups. Group A n68; received CC 100 mgday from cycle day 3 for 10 days for up to six cycles. Group B n68 underwent LOD and followed up for 6 months. The primary outcome was the ovulation rate in each group; secondary outcomes were midcycle endometrial thickness and serum estradiol, midluteal serum progesterone, and the rates of clinical pregnancy and abortion. 