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36 Cards in this Set
- Front
- Back
absence of cerebral hemispheres and overlying skull and scalp |
Anencephaly |
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Anencephaly can be seen transvaginally at how many weeks ? |
9-10 |
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Most common anomaly in CNS is? it is common in areas where what is common and what country? |
anencephaly united kingdom |
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total or near total absence of cerebral hemispheres. |
Hydranencephaly |
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with hydranencephaly what is still present |
Mid brain, basal ganglia, thalamus and cerebellum. |
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what is thoight to be the cause of hydranecephaly? |
bilateral blockage of the internal carotid arteries. |
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when looking at an ultrasound image of hydranencephaly what would appear? |
no cerebral parenchyma, large anechoic areas surrounding midbrain. |
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failure of prosencephalon (forebrain) to divide into double lobes of cerebral hemispheres. |
holoprosencephally |
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with holoprosencephally the ________ are fused. has a single_______. that is shaped like a? Caused by ____ _______ of ________. Associated with? |
thalami ventricle horseshoe incomplete cleavage, prosencephalon(midbrain) facial deformaties of the eyes nose and upper lip |
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single horseshoe shaped ventricle, fused thalami, associated with craniofacial |
Alobar |
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more cerebral tissue present, occipital lobe present. associated with cleft palate and lip |
Semilobar |
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nearly complete separation of cerebral hemispheres |
Lobar |
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failure of lip fusion prior to 35 days from conception.? May be associated with? |
facial clefts brain anomalies or trisomies |
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Congenital brain malformation characterized by incomplete formation of cerebellar vermis, dilation of 4th ventricle and enlargement of posterior fossa, |
Dandy Walker Malformation |
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bony defect in calvarium with herniation of brain parenchyma, intraparenchymal effusion |
cephalocele |
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cephalocele AKA? May occur in____ region__ region or_______ region. Most common region is ___________. It is associated with________. |
encephalocele occipital,frontal, or parietal occipital polyhydraminos |
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abnormal increase in fluid in cerebral ventricles. AKA? |
Hydrocephalus Ventriculomeagaly |
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effects of hydrocephalus are? it is associated with? |
flattening of the brain parenchyma and intraparenchymal effusion spina bifida |
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classifications of hydrocephalus? |
Aquductal stenosis communicating hydrocephalus overproduction of CSF (Cerebral spinal Fluid) |
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A condition in which brain tissue extends into the spinal canal, present at birth.
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Arnold Chiari Malformation |
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Small head the Head Circumference measures more than 3 times below normal. |
Microcephaly |
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causes of microcephaly Pt will have ? |
trisomes exposure to environmental teratogens uterine infections mental retardation |
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cysts in the choroid plexus.? May be_____and resolve by end of________ trimester._____% are associated with _____ _____.Bilateral cysts have higher association with abnormal? |
choroid plexus cysts transient 2nd 5 trisomy 18 karyotype |
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benign cyst of lymphatic origin__________. _____% originate from__________portion of neck. other locations include? May be associated with? |
cystic hygroma 80 posterolateral axilla,groin,mediastinum,thorax turners syndrome |
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defect in spine due to lack of fusion of two halves of vertebral arch |
spina bifida |
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menings only protrude= menings and spinal cord protrude= most common location of spina bifida? has a high association with? |
Meningocele Meningomyelocele cervicle Arnold Chiari MALFORMATION. |
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SMALL DEFECT WITH NO PROTRUSION OF MENINGES OR CORD |
OCCULT SPINA BIFIDA |
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associated complications with spina bifida |
bladder and bowel dysfunction paralysis of lower extremities hydrocephalus |
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cyst arising from ventricle that developes as a consequince of parenchymal hemorrhage |
Porencephalic cyst |
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Dilation of the ventricles with accumulation of cerebral spinal fluid? AKA? |
Hydrocephalus Ventriculomegaly |
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a condition in which brain tissue extends into the spinal canal, present at birth |
Arnold chiari Malformation |
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is a rare birth defect in which there is a complete or partial absence of the corpus callosum. |
agnesis of the corpus callosum |
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affects the brain development, primarily development of the cerebellum which is part of brain that coordinates movement |
Dandy Walker Malformation |
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a disorder caused by the failure of the prosencephalon to sufficiently divide into the double lobes of the cerebral hemispheres. Resulting in? |
Holosencephaly single lobed brain structure and severe skull and facial defects |
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A condition in which the brains cerebral hemispheres are absent to varying degrees and the remaining cranial activity is filled with cerebrospinal fluid |
Hydranencephaly |
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a rare birth defect that involves slits or clefts in the cerebral hemispheres of the brain. |
Schizencephaly |