Primary amenorrhea Etiology Mullerian agenesis syndrome (米勒管发育不全综合征) Mayer-Rokitansky-Kuster-Hauser syndrome (1) Karyotype: 46, XX (2)Normal ovary, fallopian tubes, absence of uterus and vagina (3)Normal FSH (4) Normal secondary sex characteristicsEtiology 1) Mullerian agenesis syndrome (米勒管发育不全综合征) Mayer-Rokitansky-Kuster-Hauser syndrome (1) Karyotype: 46, XX (2) Normal ovary, fallopian tubes, absence of uterus and vagina (3) Normal FSH (4) Normal secondary sex characteristics Primary amenorrhea