Gynaecology & Obstetrics A baby is born with ambiguous genitalia. Which of the following statements is true? A A karyotype is rarely needed B Evaluation should be done by 1 month of age C It is sometimes associated with a history of a previous sibling with congenital adrenal hyperplasia (CAH) D A thorough physical examination can usually decide the true sex 💡 Explanation A baby is born with ambiguous genitalia. Which of the following statements is true? ✓ Correct Answer: C. It is sometimes associated with a history of a previous sibling with congenital adrenal hyperplasia (CAH)