·         Head and neck-  

Large cranial cysts

Exencephaly Fig 3

Encephalocele Acrania Fig 4

Choroid plexus

Dandy-Walker malformation

 

    Fig 1   Fig 2 Fig. 3           Fig. 4

                      

Neural tube defects  Fig 5

Kyphoscoliosis  Fig 6

 Fig 5

  Fig 6

 

 

Ectopia cordis Fig 7

 Omphalocele Fig 8

Gastroschisis Fig 8

Lateral fold defect

 

 

 fig 7Fig 8

                           

Short limb dysplasia

 

 

Atrioventricular canal defect

Complete heart block

 

 

Hydronephrosis

Megacystis

Cystic dysplastic kidneys.

 

 

 

 

Partial mole

Umbilical cord cysts

Short cord associated with ventral

Fold defect

Large yolk sac

 

 

Monoamniotic twins  fig 9

Twin-twin transfusion syndrome

Conjoined twins 

 

  fig 9

 

 

 

NB- Most first trimester anomalies are more clearly visualized using TVS. Many serious anomalies may have a normal sonogram in the first trimester of pregnancy — anencephaly becomes obvious after ossification of the calvarium at or after 12 weeks of menstrual age.