Web MD -Cases in which a newborn's genitals make it unclear whether the child is a boy or girl may be more common than once believed, researchers say.
In some cases, infants have external sex organs that don't match their internal reproductive organs. For example, a female infant can have external sex organs that resemble male genitals but have typical internal female organs -- ovaries and a uterus.
For their study, the researchers analyzed data on nearly 14,200 newborns. Of those, 18 had ambiguous genitalia. That's a rate of 1.3 in 1,000 births -- much higher than the rate of one in 4,500 to 5,500 reported in previous studies, Aydin said in a news release from The Endocrine Society.
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