QuestionSBA
QuestionChoice
In craniorachischisis, the entire neural tube remains open. This leads to anencephaly plus a bony defect of the spinal cord. 'Cranio' refers to the head, 'rachi' to the spine, and 'schisis' means to split.
10008004
e
Craniorachischisis
QuestionChoice
A meningocele occurs when there is incomplete fusion of the vertebrae, with herniation of a meningeal sac containing cerebrospinal fluid, but no spinal cord. Unlike a meningomyelocele, this transilluminates very well due to the large amount of cerebrospinal fluid that is present.
10008003
d
Meningocele
QuestionChoice
A myelomeningocele occurs when there is incomplete fusion of the vertebrae with herniation of the meningeal sac containing cerebrospinal fluid and spinal cord. This can be inferred from the name itself, with 'myelo' referring to the spinal cord, 'meningo' referring to the meningeal layers, and 'coele' referring to a fluid-filled cyst. Myelomeningoceles transilluminate poorly due to the presence of spinal cord in the cyst
10008000
a
Myelomeningocele
QuestionChoice
A myelocoele occurs when the spinal cord fails to develop and the lumen of the neural tube is exposed to the outside world. This is a rare condition, and can be differentiated from a myelomeningocele through the lack of meningeal covering. It is also flatter in appearance, and not possible to transilluminate.
10008001
b
Myelocoele
QuestionChoice
Anencephaly occurs when the cranial tube fails to close so that parts or all of the brain fail to form. This can be taken from the name itself: 'an' means without, while 'cephaly' refers to the brain.
10008002
c
Anencephaly
Concept
Chapter
2693
4635
Spina bifida
Topic
174
Obstetrics
14147
A new-born baby girl is born at term via an uncomplicated caesarean section. Her mother attended all antenatal scans, which were unremarkable. After delivery, an abnormality is observed on the infant's back. It is a small cyst, which contains both cerebrospinal fluid and spinal cord. The cyst transilluminates very poorly. On examination of the infant, no other abnormalities are detected. All observations are normal.

Which of the following best describes this abnormality?
a