Monorchism
| Monorchism | |
|---|---|
| Specialty | Medical genetics  |
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
- Lance Armstrong, American bicyclist.[1]
- Frank Church, late U.S. Senator and a Presidential aspirant in 1976. His monorchism was revealed publicly during the 1976 Presidential campaign.[2]
- Tom Green, Canadian comedian/actor.[3]
- Mark Latham, Former Australian politician.[4]
- Geoff Horsfield, English footballer.[5]
- Nenê, Brazilian basketball player.[6]
- Kevin Curtis, American football player.[7]
- Bobby Moore, English footballer and World Cup winner.[8]
Due to injury
- Adolf Hitler, Chancellor in Germany (disputed, see Hitler's possible monorchism)
- Dave England, Jackass cast member.
- Mao Zedong, known as Chairman Mao, Chinese revolutionary.
- Francisco Franco, Dictator of Spain.[9]
- Troy Bayliss, world superbike champion in 2001, 2006 and 2008. In 2007 he lost a testicle during a race at Doninghton Park.[10]
- Hermann Göring, leading member of the Nazi party
- Tre Cool, German/American drummer of Green Day
- Brian Foster, American mixed martial artist.[11]
Due to cryptorchidism
Monorchism in nonhuman animals
Although extremely rare, monorchism has been observed to be characteristic of some animal species, notably in beetles.[13]
Terminology
An individual having monorchism can be referred to as monorchid.
See also
References
- ^ http://www.salon.com/health/feature/1999/07/29/lance/index.html Salon.com - Lance Armstrong
- ^ "1984-01-23 HOSPITALIZED. Frank Church, 59". TIME. 1984-01-23. Retrieved 2010-05-13.
- ^ http://www.usrf.org/tomgreen.shtml Urological Sciences Research Foundation page on Tom Green
- ^ http://www.abc.net.au/gnt/health/Transcripts/s951129.htm ABC: Testicular Cancer and Mark Latham
- ^ Baggaley, Michael (July 22, 2009). "Port Vale: Horsfield hoping his luck can rub off on Valiants". The Sentinel. Retrieved 2009-07-22.
- ^ "Nuggets: Nene's testicular tumor malignant, cancer isolated". USA Today. January 22, 2008. Retrieved 2012-02-19.
- ^ "After surgery for cancer, wide receiver Kevin Curtis gets a chance with Miami Dolphins". Palm Beach Post. December 17, 2010. Retrieved 2012-02-19.
- ^ "David Beckham is great, but Bobby Moore was one of a kind". Mirror. February 14, 2009. Retrieved 2012-02-21.
- ^ Spain's Franco 'had one testicle'
- ^ http://www.visordown.com/features/hard-man-bayliss/4009.html
- ^ "MMA cost Brian Foster a nut". Rebellion Media. April 13, 2011. Retrieved 2012-02-19.
- ^ "The Death of Bruce Lee". Find a Death. Retrieved 2012-02-19.
- ^ 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.
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