"Gynandromorphs (“gyne” from Greek meaning female, “andro” for male, and “morph” meaning variety) are individual animals that have both genetically male and female tissues and often have observable male and female characteristics. They may be bilateral, appearing to divide down the middle into male and female sides, or they may be mosaic, with patches characteristic of one sex appearing in a body part characteristic of the other sex"
"Fetal gender abnormality can be diagnosed by fetal ultrasound and/or MRI examination, or by finding a discrepancy between the fetal phenotypic and chromosomal sex."
"Prenatal diagnosis and accurate categorization of the DSD is complicated by the ultrasound resolution and radiographer's expertise in detecting accurately the phenotypic and gonadal sex and the fact that determination of the chromosomal sex can only be done by an invasive procedure (chorionic villus sampling (CVS), amniocentesis or cordocentesis), with each procedure carrying its own risk for miscarriage or premature delivery (depending on gestational age at the time of the procedure). Thus, the chromosomal sex is not always readily available. Furthermore, unlike other fetal abnormalities, the most severe abnormality can look normal, though of the opposite sex, and may therefore go undetected; for example, severe masculinization of the female external genitalia, as in 21 hydroxylase deficiency which results in Prader 4, will be indistinguishable from the normal male external genitalia, while severe incomplete masculinization of the male external genitalia, as seen in androgen insensitivity syndrome, will appear like normal female external genitalia"
(Side note: "DSD" is a controversial term and not one I'd typically use, however it is unfortunately hard to find proper intersex studies that use appropriate language)
