Acromesomelic dysplasia is characterized by limb shortening which predominantly affects the distal limb segments, hands and feet. It has an autosomal recessive mode of transmission and intelligence is normal. Longitudinal growth studies reveal very early slowd...
Aortic Valve Stenosis
Aortic stenosis denotes some degree of obstruction to flow through the aortic valve due to developmental deformity of the valve. The abnormal valve will be restricted in motion, usually bicuspid or even unicuspid instead of having three leaflets. The stenos...
Link to the Fetal Growth program for MacOS X.
Holoprosencephaly - Lobar
By the fourth week of intrauterine life the normal brain, developed from the closed neural tube, has segmented into three primary vesicles: the prosencephalon (forebrain), mesencephalon (midbrain) and rhombencephalon (hindbrain). The prosencephalon subdivid...
Dilatation or sacculation of the central spinal canal. Some authorities define the former as hydromyelia (lined by ependyma, canal intact) and the latter as syringomyelia (lined by glial cells, implying disruption of the ependymal lining). In practice the term...
Mitral Valve - Stenosis
Mitral valve obstruction can either be due to a supravalvar ring close to the valve orifice obstructing mitral flow, or to papillary muscle abnormality. A parachute mitral valve is where the papillary muscles are fused or one is severely hypoplastic. Mitral v...
Incomplete fusion of the palatal shelves, which may be complete or incomplete, unilateral or bilateral. Incomplete forms generally affect the secondary palate, posterior to the incisive foramen, and often occur without clefting of the lip. Complete palatal cl...
The association between complex cardiac malformations and abnormalities of the spleen such as polysplenia or asplenia has been noted by several authors (Van Meirop et al., 1972; Peoples et al., 1983; Macartney et al., 1980). The cardiac abnormalities usually i...
Spina bifida is defined as a congenital bony defect affecting the vertebral arches arising from incomplete caudal neurulation. There is typically a saccular protrusion of neural elements through the spinal defect which may or may not be skin covered. As a cons...
Renal Cysts - Simple
Simple renal cysts are unilocular, do not communicate with the renal pelvis, and are rare prenatally and in children but somewhat more common in adults. The cysts are not always single but are always limited in number and may produce a crescentic deformit...
© 2004 Australasian Society for Ultrasound in Medicine