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[Sex determination in ambiguous genitalia]
1Servizio di Endocrinologia Pediatrica, Ospedale Infantile Regina Margherita, Istituti Pediatrici Universitari, Torino.
Summary
Determining sex in children with ambiguous genitalia requires thorough evaluation of physical traits and predicted development. Early sex assignment is crucial, with changes generally avoided after age two unless strong psychosexual identity conflicts arise.
Area of Science:
- Pediatric Endocrinology
- Genetics
- Developmental Biology
Context:
- Ambiguous genitalia presents complex diagnostic and management challenges in neonates.
- Accurate sex assignment is critical for optimal psychosexual and physical development.
- Evaluation involves morphological assessment of genitalia and prediction of pubertal and psychosexual trajectories.
Purpose:
- To outline the essential diagnostic procedures for sex assignment in neonates with ambiguous genitalia.
- To emphasize the importance of early and definitive sex determination.
- To discuss the implications of parental decisions on sex assignment.
Summary:
- Morphological evaluation of external and internal genitalia, alongside predictions of pubertal and psychosexual development, guides sex assignment in ambiguous genitalia.
- Conditions like female pseudohermaphroditism, true hermaphroditism, mixed gonadal dysgenesis, and male pseudohermaphroditism require specific considerations.
- Urgent neonatal diagnostics are vital for timely sex assignment, ideally before 2 years of age, with parental counseling being paramount. The risk of malignancy in poorly differentiated gonads necessitates careful monitoring.
Impact:
- Facilitates timely and appropriate medical and surgical interventions for children with intersex conditions.
- Supports the long-term psychosexual well-being of individuals by establishing a consistent gender identity early in life.
- Informs clinical practice regarding the critical window for sex assignment and the challenges of parental acceptance, as illustrated by cases where neonatal female sex assignment was refused.