This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Disorders of menstruation, Subject name: Gynaecology & Obstetrics
Halban's disease is due to : 
Select and explain. 
A. Persistent corpus luteum, B. Deficient corpus luteum, C. Persistent trophoblast, D. Deficient trophoblast
A: Persistent corpus luteum
Answer: A: Persistent corpus luteum 
Explanation: Irregular Endometrial Shedding (Halban's Disease) It is rare and self-limited Irregular shedding is due to persistent corpus luteum The menstruation comes on time, is prolonged but not heavy Progestogen can suppress the bleeding, but needs to be taken on tapering dose for 20 days to complete the cycle Reference: Shaw's textbook of Gynaecology; 16th edition; Page 307