A young lady with primary amenorrhea has normal LH, FSH, estradiol and prolactin. Choose the single most likely diagnosis?

The key is C. Absent uterus. [Normal LH, FSH, estradiol and prolactin rule outs PCOS (increased LH, increased FSH, normal oestrogen. LH:FSH ratio is 2:1 or 3:1), POF (in POF, LH & FSH raised, FSH > 20 IU/L), Absent ovary will lead to low estradiol, high FSH and LH, Turner’s syndrome: gonadal streaks, as absent ovaries].