It can be detected in the first trimester of pregnancy with the use of 2D ultrasound. The sonographer is able to identify a 2 vessel cord in an image with the bladder and color Doppler, which will show only one<unk>  going around one side of the bladder. In a normal fetus, there would be 2<unk> es (one on each side of the bladder). Echocardiograms of the fetus may be advised to ensure the heart is functioning properly. Genetic counseling may be useful, too, especially when weighing the pros and cons of more invasive procedures such as chorionic villus sampling and amniocentesis. These invasive procedures are usually performed when there is a suspected chromosomal abnormality or genetic defect and will confirm a diagnosis.
Single umbilical artery
Cervical agenesis
Persistent cloaca
Fetal aortic stenosis
Omphalocele
Vaginal atresia
Iniencephaly
Craniopagus twins