clinical features of neural tube defects
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Clinical features of Clinical features of neural tube defects neural tube defects
EmbryologyEmbryology
*Neural Groove dorsal *Neural Groove dorsal aspect of the embryo3-4 waspect of the embryo3-4 w
*Neural Tube *Neural Tube
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Interference with cranial Interference with cranial closure (anencephaly or closure (anencephaly or encephalocel encephalocel
Failure of caudal closure leads to Failure of caudal closure leads to meningeocele or meningeocele or
meningeomyelocelmeningeomyelocel
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Risk factors Risk factors Prenatal influence ,including Prenatal influence ,including familial factors, are paramount in familial factors, are paramount in each abnormality, especially in each abnormality, especially in the latter Microcephaly may be the latter Microcephaly may be caused by irradiation or exposure caused by irradiation or exposure to toxins, while megalencephaly to toxins, while megalencephaly may be associated with may be associated with neurofibromatosis ,achondroplasneurofibromatosis ,achondroplasia or cerebral gigantism. Familialia or cerebral gigantism. Familial
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Classification of spinal Classification of spinal dysraphism ( spina bifida)dysraphism ( spina bifida)
• Opened SBOpened SB
• OCCULT SBOCCULT SB
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Opened SBOpened SB
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Classification of spinal Classification of spinal dysraphism ( spina bifida)dysraphism ( spina bifida)
• Opened SBOpened SB
• OCCULT SBOCCULT SB
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OCCULT SBOCCULT SB(TETHERED CORD )(TETHERED CORD )
DERMAL SINUS DERMAL SINUS
LIPOMA OF THE CORD LIPOMA OF THE CORD
DIASTEMATOMYELIA DIASTEMATOMYELIA
THICHENED FILUM TERMINAL THICHENED FILUM TERMINAL
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OCCULT SBOCCULT SB(TETHERED CORD )(TETHERED CORD )
DERMAL SINUS DERMAL SINUS
LIPOMA OF THE CORD LIPOMA OF THE CORD
DIASTEMATOMYELIA DIASTEMATOMYELIA
THICHENED FILUM TERMINAL THICHENED FILUM TERMINAL
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OCCULT SBOCCULT SB(TETHERED CORD )(TETHERED CORD )
DERMAL SINUS DERMAL SINUS
LIPOMA OF THE CORD LIPOMA OF THE CORD
DIASTEMATOMYELIA DIASTEMATOMYELIA
THICHENED FILUM TERMINAL THICHENED FILUM TERMINAL
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OCCULT SBOCCULT SB(TETHERED CORD )(TETHERED CORD )
DERMAL SINUS DERMAL SINUS
LIPOMA OF THE CORD LIPOMA OF THE CORD
DIASTEMATOMYELIA DIASTEMATOMYELIA
THICHENED FILUM TERMINAL THICHENED FILUM TERMINAL
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CLINICAL FEATURES CLINICAL FEATURES WEAKNES WEAKNES
SPHINCTERIC DISTURBANCE SPHINCTERIC DISTURBANCE
PAIN IN THE BACKPAIN IN THE BACK
SCOLIOSIS SCOLIOSIS
SENSORY DEFICITS SENSORY DEFICITS
CUTANOUS SIGNES CUTANOUS SIGNES
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