All are true regarding medical treatment of endometriosis except?: (A) Oral progestins cause decidualization of endometrial tissue, (B) Injectable progestagen is used once in 3 months in the management of pain of endometriosis, (C) Levonorgestrel releasing intrauterine system reduces dysmenorrhoea in endometriosis, (D) Gestrinone is given orally 2.5 - 5 mg per day to induce endometrial atrophy
Answer is D. Gestrinone has a long half life. It is a 19-noestosterone derivative. It is given orally 2.5 to 5 mg twice weekly for 6 to 9 months. It has androgenic, antiprogestagenic, antioestrogenic and antigonadotrophic action. Ref : Shaw's Textbook of Gynaecology