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[[Category:Congenital disorders of male genital organs]]
[[Category:Congenital disorders of male genital organs]]
[[Category:Male genital disorders]]
[[Category:Monorchism]]
[[Category:Monorchism]]



Revision as of 00:53, 7 September 2012

Monorchism
SpecialtyMedical genetics Edit this on Wikidata

Monorchism is the state of having only one testicle within the scrotum.

Causes

This can be due to:

  • One testicle not descending into the scrotum during normal embryonic or fetal development (3–4% of 'normal' live births), also known as: undescended testis or cryptorchidism. In this case the testis is within the abdominal cavity, somewhere along the normal route of descent — most commonly, within the inguinal canal. Such a testis has an increased risk of malignancy.
  • One testicle may disappear during development (the so called vanishing testis) due to some intrauterine insult. This is thought to be most likely vascular, such as testicular torsion.
  • One testicle being surgically removed through orchidectomy.
  • One testicle may be injured.

Notable cases

Due to testicular cancer

Due to injury

Due to cryptorchidism

Monorchism in nonhuman animals

Although extremely rare, monorchism has been observed to be characteristic of some animal species, notably in beetles.[14]

Terminology

An individual having monorchism can be referred to as monorchid.

See also

References

  1. ^ http://www.salon.com/health/feature/1999/07/29/lance/index.html Salon.com - Lance Armstrong
  2. ^ "1984-01-23 HOSPITALIZED. Frank Church, 59". TIME. 1984-01-23. Retrieved 2010-05-13.
  3. ^ http://www.usrf.org/tomgreen.shtml Urological Sciences Research Foundation page on Tom Green
  4. ^ http://www.abc.net.au/gnt/health/Transcripts/s951129.htm ABC: Testicular Cancer and Mark Latham
  5. ^ Baggaley, Michael (July 22, 2009). "Port Vale: Horsfield hoping his luck can rub off on Valiants". The Sentinel. Retrieved 2009-07-22.
  6. ^ "Nuggets: Nene's testicular tumor malignant, cancer isolated". USA Today. January 22, 2008. Retrieved 2012-02-19.
  7. ^ "After surgery for cancer, wide receiver Kevin Curtis gets a chance with Miami Dolphins". Palm Beach Post. December 17, 2010. Retrieved 2012-02-19.
  8. ^ "David Beckham is great, but Bobby Moore was one of a kind". Mirror. February 14, 2009. Retrieved 2012-02-21.
  9. ^ Spain's Franco 'had one testicle'
  10. ^ http://www.visordown.com/features/hard-man-bayliss/4009.html
  11. ^ "MMA cost Brian Foster a nut". Rebellion Media. April 13, 2011. Retrieved 2012-02-19.
  12. ^ "The Death of Bruce Lee". Find a Death. Retrieved 2012-02-19.
  13. ^ Li Zhisui (2010). Private Life Of Chairman Mao: The Memoirs of Mao's Personal Physician. Random House. p. 100. ISBN 9781407059228.
  14. ^ Will KW, Liebherr JK, Maddison DR, Galián J (2005). "Absence asymmetry: the evolution of monorchid beetles (Insecta: Coleoptera: Carabidae)". J. Morphol. 264 (1): 75–93. doi:10.1002/jmor.10319. PMID 15732050.{{cite journal}}: CS1 maint: multiple names: authors list (link)