hrp0095p1-516 | Growth and Syndromes | ESPE2022

Ovarian hilus cell hyperplasia: a rare cause of progressive virilization in a girl with Turner syndrome in the absence of Y chromosomal material

van der ZwanY.G. , Spath M.A. , van Setten P.A. , van der Velden J.

Introduction: Turner syndrome is a relatively common chromosomal abnormality affecting 1:2000 girls. Virilization can occur in girls with Turner syndrome which is in most cases associated with the presence of an Y chromosome. Mosaicism is found in 25% of the karyotypes, in 6% of those the Y chromosome is present. This could lead to development of androgen producing gonadoblastoma/dysgerminoma. Active screening to search for Y chromosomal material is included i...