This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endometriosis, Subject name: Gynaecology & Obstetrics
All of the following are used in endometriosis except. 
Select and explain. 
A. Progesterone, B. Danazol, C. GnRH agonist, D. Estrogen
D: Estrogen
Answer: D: Estrogen 
Explanation: Ans. is d, i.e. EstrogenEndometriosis is as hyperestrogenic condtion so all drugs which directly or indirectly decreased estrogen are used in managing it, not estrogen itself.