Monorchism

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Monorchism
Classification and external resources
Example of Monorchism.jpg
ICD-10 Q55.0
ICD-9 752.89

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

Causes[edit]

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[edit]

Due to testicular cancer[edit]

Due to injury[edit]

Due to cryptorchidism[edit]

Monorchism in nonhuman animals[edit]

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

Terminology[edit]

An individual having monorchism can be referred to as monorchid.

See also[edit]

References[edit]

  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.