Disorders of sex development are challenging to evaluate and diagnose in the newborn. As pediatric urologists, our goals are to (1) identify patients who should be evaluated; (2) rule out life-threatening syndromes; and (3) involve a multidisciplinary team for evaluation, diagnosis, and gender assignment. This review briefly goes over the newborn differential diagnosis in disorders of sex development, highlights the important laboratory and imaging data needed, and discusses the multidisciplinary approach to gender assignment and care of these patients. Early involvement of the family in decision-making with the multidisciplinary team is paramount to a timely evaluation and diagnosis in these patients.
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