This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
Which of these is not a non-contraceptive use of levonorgestrel? 
Select and explain. 
A. Endometriosis, B. Premenstrual tension, C. Complex endometrial hJperplasia, D. Emergencycontraception
B: Premenstrual tension
Answer: B: Premenstrual tension 
Explanation: Ans: B. Premenstrual tension(Ref Williams 24/e p701: Goodman Gilman 12/e p1184, 1190)Pre-menstrual tension is not a non-contraceptive use of levonorgestrel.Therapeutic Uses - Levonorgestrel:Emergency contraception:Useful within 120 hours as emergency bih control.Idiopathic menorrhagia:Excessively heavy, regular menses in the absence of intracavitary pathology or coagulopathy.Menometrorrhagia:Excessive bleeding in amount prolonged in duration (regular or irregular intervals).An alternative delivery system - Protect against endometrial hyperplasia in women taking SERM.Management of recurrent pelvic pain secondary to multi- treated endometriosis.LNG-IUS is licensed for use in menorrhagia & to provide endometrial protection to perimenopausal & postmenopausal women on estrogen replacement therapy.LNG-IUS beneficial in endometriosis, adenomyosis, fibroids, endometrial hyperplasia & early stage endometrial cancere (where the patient is deemed unfit for primary surgical therapy).