This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Sexuality and intersexuality, Subject name: Gynaecology & Obstetrics
A 17-year-old girl with amenorrhea, atrophied breast, hypoplastic uterus : 
Select and explain. 
A. Turner's syndrome, B. Gonadal dysgenesis, C. Androgen insensitivity syndrome, D. Klinefelter's syndrome
A: Turner's syndrome
Answer: A: Turner's syndrome 
Explanation: Turner's syndrome Phenotype is female Karyotype is 45,XO Sho stature,webbed neck underdeveloped uterus and vagina ovaries lack graffian follicles breasts are not developed,axillary and pubic hair is scanty or absent SHAW'S TEXTBOOK OF GYNAECOLOGY,pg no:111,115th edition