This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hydramnios and Oligo Hydramnios, Subject name: Gynaecology & Obstetrics
Cryptomenorrhea is seen in: 
Select and explain. 
A. Asherman's syndrome, B. Testicular feminizing syndrome, C. Imperforate hymen, D. Uterine agenesis
C: Imperforate hymen
Answer: C: Imperforate hymen 
Explanation: Ans. C. Imperforate hymenCryptomenorrhea means monthly subjective symptoms of menstruation without flow of blood and may be caused by an imperforate hymen. Crypt literally means hidden- Thus cryptomenorrhea means hidden menorrhea.