SONO 121 NEW TERMS.

SONO 121 NEW TERMS.
Acrania is sonographically detected by

an irregular shaped head that lacks echogenic calvarium surrounding the brain. It is the presence of brain
tissue without the calvarium

sonographic findings of cepahlocele

an extracranial mass which may be fluid filled or contain solid components
a bony defect in the skull

Holoprocenepahly is

abnormal cleavage of the forebrain

holoprocenepahly is more commonly associated with

trisomy 13

skeletal dysplasia is most commonly seen with

cloverleaf skull

most common lethal dysplasia

thanatophoric dysplasia

type 1 thanatophoric dysplasia consists of

short, curved femurs and a flat vertebral bodies

type 2 thanatophoric dysplasia

straight short femurs flat vertebral columns and cloverleaf skull

shortening of proximal long bones femur and humerus

rhizomellic dysplasia

shortening of the distal extremeties radius and ulna tibia fibula

mesomelic dysplasia

shortening of both long and short bones

severe micromelia

Achondroplasia

nonlethal skeletal dysplasia
results from decreased endochrondal bone formation
produces short squat bones