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
A girl presents with, primary amenorrhea, grade V thelarche, grade II pubarche, no axillary hair, likely diagnosis is: 
Select and explain. 
A. Testicular feminization, B. Mullerian agenesis, C. Turners syndrome, D. Gonadal dysgenesis
A: Testicular feminization
Answer: A: Testicular feminization 
Explanation: Tanner's Stage V thelarche means : 'Mature' breast development Stage II pubarche means : Sparse growth; We therefore have to look for a condition where development of breast is unaffected despite poor development of pubic hair. Thus, testicular feminization is the only condition out of these with well developed breast & poorly developed axillary hair or pubic hair. Ref: Textbook of Gyanaecology By Copeland, Page 601 ; Harrison's Principles of Internal Medicine, 14th Edition, Page 2122 and 15th Edition, Page 2181-2