Endometrial pattern in long-term users of NET-EN.

Endometrial biopsies were obtained from one hundred Thai NET-EN users who were treated for at least 5 yrs. Seventy-four and 26 per cent of them were obtained twelve and 1 wk after last injection, respectively. The endometrium gave an inactive progestational pattern in 75 per cent, proliferative phase 23 per cent and secretory phase 2 per cent. No endometrial carcinoma occurred in this study.