<prompt> A 16-year-old girl presents with primary amenorrhea. She has well developed breast, public hair and axillary hair. Examination shows absent vagina and an USG uterus is absent. What is the most likely diagnosis?Androgen insensitivity syndromeCongenital adrenal hyperplasiaMullerian agenesisTurner syndrome  <response>: Ans. is c, i.e. Mullerian agenesis.The female in the question has-Primary amenorrheaNormal secondary sexual characteristic Rules out Turners syndromeWell-developed axillary and pubic hair Rules out Androgen Insensitivity SyndromeAbsent uterus Rules out congenital adrenal hyperplasia.Hence, patient is a clear-cut case of mullerian agenesis. 