The growth developed a result of the boy, named Xiao Wei, being born with spina bifida.
His mother Chen Wei, from Guangdong in Southern China, said she has asked for the growth to be removed but surgeons say it isn't possible, at least at the moment.
Seven-month-old Xiao Wei was born with spina
bifida, a condition that causes the spine to become deformed. It is this
that has caused the unusual growth at the bottom of his spinal column
Spina bifida or 'split spine' is a fault in the development of the spine and spinal cord which leaves a gap in the spine.
The spinal cord is responsible for connecting all parts of the body to the brain.
In the first month of life,
a developing baby in the womb grows a structure called the neural tube. It is this that will eventually form the spine and nervous system.
But in cases of spina bifida, the spinal column - the bone that surrounds and protects the nerves - does not fully close.
The exact causes are unknown, but several risk factors have been identified, the most significant being a lack of folic acid before and at the very start of pregnancy.
There are a number of different types of spina bifida but Xiao has myelomeningocele, the most serious variant of the condition. It affects one pregnancy in every 1,000 in Britain.
Surgeon Huang Chuanping says that if they
operate now the 10 cm long 'tail' it will return unless they repair the
spinal canal first
Spina bifida or 'split spine' is a fault in the
development of the spinal cord which leaves a gap in the spine. In
Xiao's case the spinal membranes and cord have pushed out to create a
sac in the baby¿s back.
The membranes and spinal cord push out to create a sac in the baby’s back. This sometimes leaves the nervous system vulnerable to infections that may be fatal.
In most cases surgery can be can close the defect but damage to the nervous system will usually already have taken place, resulting in a range of symptoms, including paralysis and incontinence.
Chinese medics say the growth at the base of Xiao's spine has been caused by damage to the outer wall of the child's spinal canal.
Surgeon Huang Chuanping explained: 'Xiao's growth is quite well developed and now measures some 10 centimetres.'
'If we cut it off it will simply grow again. We need to repair the spinal canal firs
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