Cryptorchidism: an apparent substantial increase since 1960. John Radcliffe Hospital Cryptorchidism Study Group.
- 29 November 1986
- Vol. 293 (6559), 1401-1404
- https://doi.org/10.1136/bmj.293.6559.1401
Abstract
A total of 1849 boys born to mothers resident in a defined area around Oxford were examined for cryptorchidism. Those born in hospital were examined at birth and again after three months if cryptorchid at the earlier examination. The incidence of cryptorchidism at three months adjusted to the birthweight distribution of England and Wales was 1.58%. By comparison, in a very similar study conducted around 1960 the incidence was 0.96%. Hence the cryptorchidism rate had apparently increased by 65% over the two decades, which contrasted with the twofold increase in the national orchidopexy rate. The proportion of boys undergoing orchidopexy appeared consistently to be roughly twice the proportion of boys with an undescended testis at 3 months of age. The increase in cryptorchidism and disparity with the rate of orchidopexy are not easily explained and are the subjects of continuing study.Keywords
This publication has 15 references indexed in Scilit:
- Undescended testis: The effect of treatment on subsequent risk of subfertility and malignancyJournal of Pediatric Surgery, 1986
- Ascent of the Testis: Fact or FictionBritish Journal of Urology, 1985
- Maternal and Gestational Factors Affecting the Risk of Cryptorchidism and Inguinal HerniaInternational Journal of Epidemiology, 1984
- APPARENT DOUBLING OF FREQUENCY OF UNDESCENDED TESTIS IN ENGLAND AND WALES IN 1962-81The Lancet, 1984
- Non-Seminomatous Testicular Germ Cell Tumours in Denmark 1976–1980 Results of TreatmentActa Radiologica: Oncology, 1984
- Non-Seminomatous Testicular Germ Cell Tumours: Preliminary analysis of ongoing trials in the Dateca StudyActa Radiologica: Oncology, 1984
- Bilateral Germ Cell Tumours of the TestisBritish Journal of Urology, 1980
- Incidence of carcinoma in situ of germ cells in contralateral testis of men with testicular tumours.BMJ, 1979
- POSSIBLE CARCINOMA-IN-SITU OF THE TESTISThe Lancet, 1972
- The Descent of the TestisArchives of Disease in Childhood, 1964