Understanding XY Findings on Ultrasound: Fetal Sex Determination

A phenotypically XY result on an ultrasound indicates that the developing fetus has male external genitalia, such as a penis and scrotum. This is determined by examining the appearance of the fetal genitalia during an ultrasound scan.

It's important to note that ultrasound examinations can provide valuable information about fetal development and can help identify potential abnormalities, but they have limitations and are not always 100% accurate. In some cases, further testing or examinations may be needed to confirm the sex of the fetus or to rule out any underlying conditions.