<prompt> A girl presents with, primary amenorrhea, grade V thelarche, grade II pubarche, no axillary hair, likely diagnosis is:Testicular feminizationMullerian agenesisTurners syndromeGonadal dysgenesis  <response>: Tanners 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 ; Harrisons Principles of Internal Medicine, 14th Edition, Page 2122 and 15th Edition, Page 2181-2 