7709 Ovotesticular Difference of Sex Development: Prognostic Evaluation, Sex Assignment, and Ethics

Abstract Disclosure: X. Xu: None. Y. Lin: None. B. Shivanna: None. A. Lee: None. J.C. Hakim: None. D.G. Mann: None. L.M. Noll: None. P. Georgiadis: None. S.K. Gunn: None. L.P. Karaviti: None. Background: Our case provides the identification and management of a newborn baby with ovotesticular syndrome, which was formerly known as true hermaphroditism. The term was classically derived from Greek mythology in which the deity 'Hermaphroditus', merging with the nymph Salamis, embodied both male and female attributes. The term 'true hermaphroditism' is now avoided due to its stigmatizing connotations. Ovotesticular difference of sex development (DSD) is an exceedingly rare condition, occurring in fewer than 1 in 20,000 births. This condition involves the coexistence of functional ovarian and testicular tissue within one individual, presenting a challenge in sex assignment due to unpredictable gender development. Clinical Case: This is a single case of the presence of ovarian and testicular differentiation on one side and a transitional zone of mixed pattern. Prenatal genetic testing consistent 46,XX karyotype. Initial ultrasound at the outside hospital revealed a uterus and right testicle. The baby exhibited Prader stage 4 genitalia, with a palpable gonad in the right labioscrotal area and the left gonad not palpable. Prophylactic hydrocortisone was started due to concerns regarding NR5A1/SF1 mutation. Further evaluations, including genetic tests, hormonal assessments, urinalysis and kidney ultrasound for the WT1 mutation, and scrotal and pelvic ultrasounds, were conducted. The high-dose ACTH stimulation test ruled out adrenal insufficiency. The testosterone level was in the male range, and the HCG stimulation test further confirmed functioning Leydig cells. The postnatal karyotype was 46,XX, and chromosome microarray analysis showed no abnormalities. Our approach to this case was multidisciplinary, including our endocrine experts, urologist, gynecologist, ethicist, and psychologist. We discussed the fluidity of sex assignment and addressed the degree of virilization, nature of the gonadal tissue, and emphasized the necessity of regular clinical follow-up. Our main concern was to educate the parents and protect the choices of the child. In this case, the child assumed a male sex assignment, as a result of the decision-making process between our team and the parents. In this context we did emphasize the fluidity of sex assignment. Clinical Lesson: Long-term outcomes for ovotesticular DSD remain understudied. Existing reports highlight varying rates of gender dysphoria, sexual function, and psychological well-being. Our approach to managing ovotesticular DSD involved a framework emphasizing ethical considerations and parental involvement. We advocated for and practiced a shared decision-making model involving healthcare providers, parents, and ultimately the patient. Presentation: 6/3/2024