In fetuses with shortened limb bones, with additional features like neck cysts and absent nasal bone
, the possibility of the baby having chromosomal, genetic or primary skeletal abnormalities is very high.
In such a scenario, I would definitely advise you to go for a procedure called amniocentesis
, where the fetus is examined for associated chromosomal anomalies.
Please consult a geneticist / fetal medicine specialist, who would guide you for the same and perform amniocentesis for you.
Based on the results of genetic counselling
and amniocentesis, plus other risk factors like your age, family history, other medical conditions etc, you could decide the future course of your pregancy.
Hope this helped you.