Article Text

Download PDFPDF
Prevalence of acquired undescended testis in 6-year, 9-year and 13-year-old Dutch schoolboys
  1. W W M Hack1,
  2. K Sijstermans1,
  3. J van Dijk2,
  4. L M van der Voort-Doedens1,
  5. M E de Kok2,
  6. M J Hobbelt-Stoker2
  1. 1Department of Paediatrics, Medical Centre Alkmaar, Alkmaar, The Netherlands
  2. 2Institution for Youth Health Care, Gemeenschappelijke Gezondheidsdienst Noordkennemerland, Alkmaar, The Netherlands
  1. Correspondence to:
    Dr W W M Hack
    Medical Centre Alkmaar, Department of Paediatrics, Wilhelminalaan 12, Alkmaar 1815 JD, The Netherlands;w.hack{at}


Objective: To investigate the prevalence of acquired undescended testis (UDT) in Dutch schoolboys.

Design and participants: As a part of routine school medical examinations, during a 2-year period (2001–3), testis position was determined in 6-year, 9-year and 13-year-old schoolboys. Before the examination, a parent questionnaire was sent inquiring both about the position of the testes and whether the child had been admitted earlier to hospital for orchidopexy. In 6-year and 13-year olds, a physical examination was performed by the school medical officer; in 9-year olds, a school nurse interview was held. Each boy for whom there was any doubt of the scrotal position was referred to the hospital for examination of both testes.

Setting: Institution for Youth Health Care “Noordkennemerland” and Medical Centre Alkmaar, Alkmaar, the Netherlands.

Results: Testis position was determined in 2042 boys aged 6, 1038 aged 9 and 353 aged 13. Of these, 47, 53 and 8 boys, respectively, were referred to the hospital and seen for further evaluation. The diagnosis of acquired UDT was made in 25 boys aged 6, 23 aged 9 and four aged 13. In 33 boys, a congenital UDT was diagnosed; 32 (97%) had already been diagnosed and treated at an early age.

Conclusions: The prevalence of acquired UDT for 6-year, 9-year and 13-year olds was, respectively, 1.2% (25/2042), 2.2% (23/1038) and 1.1% (4/353). In addition, congenital UDT is treated during the early years of life and, in contrast with popular belief, screening programmes for detecting UDT in the early years are successful.

  • ORP, orchidopexy
  • UDT, undescended testis
View Full Text

Statistics from


  • Published Online First 11 August 2006

  • Competing interests: None declared.

Request Permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.

Linked Articles

  • Précis
    BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health
  • Atoms
    Howard Bauchner
  • Perspectives
    P Mouriquand