hrp0097p1-365 | Sex Differentiation, Gonads and Gynaecology, and Sex Endocrinology | ESPE2023

Etiology, histology and long-term outcome of bilateral testicular regression: a large Belgian series

Tack Lloyd , Brachet Cécile , Beauloye Veronique , Heinrichs Claudine , Boros Emese , De Waele Kathleen , van der Straaten Saskia , Van Aken Sara , Craen Margarita , Lemay Annelies , Rochtus Anne , Casteels Kristina , Beckers Dominique , Mouraux Thierry , Logghe Karl , Van Loocke Marlies , Massa Guy , Van de Vijver Koen , Syryn Hannes , Van De Velde Julie , De Baere Elfride , Verdin Hannah , Cools Martine

Background: Long-term outcome studies on bilateral testicular regression (BTR) are currently lacking, hampering counseling of patients and parents. Although a vascular origin was initially reported, recent studies revealed a genetic origin in a subset of patients (i.e. DHX37 gene variants). How this relates to patient outcomes remains unclear.Methods: Thirty-five patients with BTR were recruited in eight Belgian centers ...

hrp0095fc6.3 | Sex Development and Gonads | ESPE2022

Gonadal morphology in 46,XY gonadal dysgenesis: I-DSD Registry-based study

Tadokoro-Cuccaro Rieko , Hughes Ieuan , Cools Martine , van de Vijver Koen , Bilharinho de Mendonça Berenice , Domenice Sorahia , L Batista Rafael , Thomazini Dallago Renata , Lisboa Gomes Nathalia , Costa Elaine F. , Maciel-Guerra Andréa T. , Guerra-Junior Gil , Gabriel Ribeiro de Andrade Juliana , Lucas-Herald Angela , Bryce Jillian , Hannema Sabine , Juul Anders , Globa Eugenia , MсElreavey Kenneth , Baronio Federico , Lopez Dacal Jimena , Darendeliler Feyza , Poyrazoglu Sukran , Kolesińska Zofia , Niedziela Marek , Claahsen – van der Grinten Hedi L. , van den Akke Erica L.T. , Herrmann Gloria , Atapattu Navoda , Jain Vandana , Sharma Rajni , Bettendorf Markus , Konrad Daniel , Martin Holterhus Paul , Fica Simona , Skae Mars , Russo Gianni , Rita Stancampiano Marianna , Gazdagh Gabriella , H Davies Justin , Mohamed Zainaba , Nimali Seneviratne Sumudu , Guran Tulay , GÜVEN Ayla , Wasniewska Malgorzata , Mladenov Vilhelm , Verkauskas Gilvydas , Markosyan Renata , Korbonits Marta , Faisal Ahmed S , Hiort Olaf , Wagner Isabel , Thankamony Ajay

Background/Aims: 46,XY gonadal dysgenesis (GD) is classified as complete (CGD) or partial (PGD) depending on gonadal morphology and function. In contrast to the typical female external genitalia in CGD, the phenotype of PGD is variable depending on androgen production. A diagnosis of PGD is based on clinical/biochemical features, gonadal histology and genetic findings. The aim of this study is to characterise these features, particularly histological, in a lar...