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 may have been surgically removed through
orchiectomy.
Archibald Douglas, 4th Earl of Douglas, magnate of the Kingdom of Scotland, and Peer of France. Lost in 1403, while fighting at the Battle of Shrewsbury (The previous year he had lost an eye at the Battle of Homildon Hill).[11]
Troy Bayliss, world
superbike champion in 2001, 2006 and 2008. In 2007 he lost a testicle during a race at Donington Park.[12]
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 may have been surgically removed through
orchiectomy.
Archibald Douglas, 4th Earl of Douglas, magnate of the Kingdom of Scotland, and Peer of France. Lost in 1403, while fighting at the Battle of Shrewsbury (The previous year he had lost an eye at the Battle of Homildon Hill).[11]
Troy Bayliss, world
superbike champion in 2001, 2006 and 2008. In 2007 he lost a testicle during a race at Donington Park.[12]