- Monorchism
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Monorchism Classification and external resources ICD-10 Q55.0 ICD-9 752.89 Monorchism is the state of having only one testicle within the scrotum.
Contents
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 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]
Due to injury
- Adolf Hitler, Chancellor in Germany (possibly, see Hitler's possible monorchism)
- Dave England, Jackass cast member.
- Mao Zedong, known as Chairman Mao, Chinese revolutionary.
- Francisco Franco, Dictator of Spain.[6]
- Troy Bayliss, world superbike champion in 2001, 2006 and 2008. In 2007 he lost a testicle during a race at Doninghton Park [7].
- Barnacle Jim, American cross country face bike champion in 2007 and 2010.
- Hermann Goering, leading member of the Nazi party
Monorchism in nonhuman animals
Although extremely rare, monorchism has been observed to be characteristic of some animal species, notably in beetles.[8]
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. http://www.time.com/time/magazine/article/0,9171,949974,00.html. 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. http://www.thisisstaffordshire.co.uk/portvale/Port-Vale-Horsfield-hoping-luck-rub-Valiants/article-1184110-detail/article.html. Retrieved 2009-07-22.
- ^ Spain's Franco 'had one testicle'
- ^ http://www.visordown.com/features/hard-man-bayliss/4009.html
- ^ 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. http://www3.interscience.wiley.com/journal/109931936/abstract.
Male congenital anomalies of the genitalia, including Intersex and DSD: (Q53–Q56 · 752.5–752.7) Internal OtherExternal OtherCategories:- Congenital disorders of male genital organs
- Medicine stubs
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