A term infant is born to a 32 year old woman whose pregnancy was - ProProfs
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A term infant is born to a 32-year-old woman whose pregnancy was uncomplicated. A newborn physical examination shows a small lower lumbar skin dimple with a protruding tuft of hair. A radiograph shows that the underlying L4 vertebra has lack of closure of the posterior arches. What is the most likely diagnosis?



A. Dandy-Walker malformation
B. Spina bifida occulta
C. Tuberous sclerosis
D. Arnold-Chiari malformation
E. Meningomyelocele
Asked by Brayden on Sep 09, 2016

This question is part of

Pathology Review ch 28 CNS prt 3

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1 Answer

John Smith

John Smith

Answered on Sep 09, 2016

Spina bifida occulta-(b) spina bifida occulta is the mildest form of neural tube defect. it is characterized by defective closure of the vertebral arches with intact meninges and spinal cord. a radiograph may show its presence in 20% of the population. dandy-walker malformation is detected by ultrasound evidence of a cyst in the fourth ventricle and agenesis of the cerebellar vermis. tuberous sclerosis is a rare disease that causes firm hamartomatous tubers in the cortex. in an arnold-chiari malformation, there is a small posterior fossa and extension of the cerebellum into the foramen magnum and a lumbar meningomyelocele. meningomyeloceles are open neural tube defects. bp7 821822bp8 872pbd7 1354pbd8 1284
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