Fetal spine Flashcards
3 ossification centers for the spine
midline anterior
2 posterior
2 normal curves in the spine
lordotic
kyphotic
when should the spine be evaluated by
18-20 weeks
where does the spine taper
sacrococcygeal area
spina bifida common cause
failure of dorsal vertebrae tube to close at day 25
most common type of spina bifida
spina bifida aperta
Spina Bifida Aperta Sono Findings
Splayed vertebral elements
Hydrocephalus often present
Frontal bone scalloping (lemon sign)
Deformed cerebellum with obliterated CM
Chiari II Malformation
Spina Bifida Aperta differentials
Sacrococcygeal teratoma Lipomeningocele
what is chiari 2 malformation
abnormal appearane of the posterior fossa
what is chiari 2 malformation
abnormal appearane of the posterior fossa
what causes chirari symptoms
what causes chirari symptoms
what is chiari 2 malformation always associated w/
spinal myelomeningocele or myelocele
Spina Bifida Cranial Signs
Ventriculomegaly
Lemon sign
Banana Sign
Non-vis, of cisterna magna
what is the lemon sign
flattening of frontal calvarium
when is the lemon sign. seen
before 24 weeks
what is the lemon sign associated w/
ventriculomegaly
spinal myelomeningocele
what can cause an elevated AFP
multiple fetus
fetal death
open defects
Sacrococcygeal Teratoma on sono
solid or mixed
cystic
calcifications
sacral agenesis may be present with
caudal regression
sirenomelia sequence
vacteral
what is caudal regression syndrome
spectrum of sctructual defects in caudal region
vary from partial agenesis of the coccyx to lumboscral agensis
caudal regression on sono
what is Sirenomelia Sequence (Mermaid Syndrome
fused lower extremities
single umbilical artery
GI/GU malformations
