Encounters: Genotype XO

I work at a pediatrician's office, and about one to two weeks ago, a patient was born with a genotype of XO. This type of genotype is referred to as Turner Syndrome. It occurs when there is only one X chromosome and the other chromosome is not there at all. The patient's parents were very distraught, because they didn't know what to tell their friends and family members what the sex of the baby was. I found this very interesting because I have never knew of anyone with a genotype other than XX or XY. The doctor stated that in order for the infant to grow into a girl, she would need estrogen shots/pills to boost external female characteristics once she reaches puberty. It is not known whether she will be fertile or infertile, because that will be determined once she reaches the age of puberty.