hrp0086p1-p370 | Gonads & DSD P1 | ESPE2016

45,X/46,XY Chromosomal Disorders of Sex Development: Experience from a Cohort of 50 Patients Followed in One Single Institution

Costanzo Mariana , Guercio Gabriela , Geniuk Nadia , Berensztein Esperanza , Manuel Lazzati Juan , Maceiras Mercedes , Zaidman Veronica , Aurelio Rivarola Marco , Belgorosky Alicia

Background: Disorders of sex development (DSD) are those congenital conditions in which development of chromosomal, gonadal, or anatomical sex is atypical. 45,X/46,XY mosaicism results in a large clinical spectrum of DSD including from female patients with Turner’s syndrome to normal appearing males.Objective and hypotheses: The main aim of this study is to review the clinical and gonad histological findings in a cohort of chromosomal DSD patients f...

hrp0086p1-p368 | Gonads & DSD P1 | ESPE2016

Precocious/Early and Accelerated Puberty in a Boy with a Homozygous R192C Mutation in CYP19 (Aromatase) Gene

Costanzo Mariana , Guercio Gabriela , Garcia-Feyling Jose , Saraco Nora , Marino Roxana , Perez Garrido Natalia , Manuel Lazzati Juan , Maceiras Mercedes , Aurelio Rivarola Marco , Belgorosky Alicia

Background: Aromatase deficiency is a rare autosomal recessive disorder produced by CYP19 gene mutations. 46XX affected patients presented with ambiguous genitalia leading to early identification. Most 46XY affected patients presented normal external genitalia and the condition often remains undiagnosed until late puberty. Information on pubertal development in affected boys is scarce since to the present date only two patients, younger than 4 years of age, without lo...