Complex Genital Reconstructions (DSDs)

EA 1.1 Complex Genital Reconstructions (DSDs)

Differences in sex development (DSD) is a term used to describe a group of congenital conditions in which an individual’s biological sex does not fully align with typical male or female development. DSD can involve differences in chromosomal sex, gonadal sex (the presence of testes or ovaries), hormonal sex (the levels of male or female hormones), or genital sex (the appearance of external genitalia). These variations can result in a wide range of phenotypes, from individuals with typical male or female characteristics to individuals with ambiguous genitalia or atypical reproductive systems. DSD can be caused by genetic mutations, hormonal imbalances, or environmental factors, and the condition may be diagnosed prenatally or at birth. Treatment may involve medical or surgical interventions, depending on the specific condition and the individual’s needs. DSD affects a small percentage of the population and can have significant social and psychological implications for affected individuals and their families.

Expertise Area Coordinator and Vice-EAC

Expertise Area Coordinator: Katja Wolffenbuttel

Katja Wolffenbuttel is a consultant in pediatric urology at the Erasmus University Medical Center – Sophia Children’s Hospital in Rotterdam, the Netherlands.

Her clinical area of interest is the treatment of children and adolescents with genital developmental disorders, in particular DSD. She is a member of the multidisciplinary Erasmus MC Center of Expertise for DSD, participating in both ERNs dealing with DSD, ERN eUROGEN and Endo-ERN.

Her research focus is DSD, particularly congenital gonadal developmental disorders, known as gonadal dysgenesis (GD). She is currently working on a research project on the relationship of somatic and germ cell components in GD.

Her international memberships include the European Society for Pediatric Urology (ESPU), and the European Association of Urology (EAU). She has served the ESPU as a board member (2016-2023) and Secretary (2022-2023) and is a Fellow of the Academy of Pediatric Urology (FEAPU).

Vice-EAC: Verena Ellerkamp

Conditions and Codes

  • 46,XX disorder of sex development induced by fetal androgens excesss: ORPHAcode 90776 / ICD-10 Code Q99.1
  • 46,XY disorder of sex development: ORPHAcode 98085 / ICD-10 Code Q56.1
  • Turner syndrome: ORPHAcode 881 / ICD-10 Codes Q96.0Q96.1Q96.2Q96.3Q96.4Q96.8Q96.9
  • Classic congenital adrenal hyperplasia due to 21-hydroxylase deficiency: ORPHAcode 90794 / ICD-10 Code E25.0

Healthcare Providers

AT Linz Ordensklinikum, DE Munich LMUK, DE Leipzig UK, DE Mannheim UK, DE Tübingen UK, DE Ulm UK, DK Aarhus DNU, DK Copenhagen Rigshospitalet, ES Barcelona Sant Joan, ES Barcelona Vall d’Hebron, ES Madrid La Paz, ES Barcelona Fundació Puigvert, FI Helsinki HUS, FR Paris Necker, FR Paris Robert-Debré, IT Padua AOU, IT Bologna AOU, IT Rome Bambino Gesu, LT Vilnius SK, LV Riga BKU, NL Rotterdam Erasmus, NL Nijmegen Radboudumc, PL Gdansk MUG, PL Krakow USD, SE Stockholm Karolinska, SE Gothenburg Sahlgrenska, SE Uppsala Akademiska

Patient Information

Patient Information Video

The information video below was produced by ERN eUROGEN in coooperation with Erasmus MC. It was funded by the European Union.

Additional Resources