What is the typical outcome associated with nearly 90% of cases involving cystic hygroma?

Cystic hygroma, a lymphatic malformation typically found in the neck region, is often associated with significant developmental issues. The presence of a cystic hygroma is frequently correlated with serious chromosomal abnormalities, particularly in the first trimester of pregnancy.

In many cases, these abnormalities can lead to severe complications, and nearly 90% of fetuses identified with a cystic hygroma may not survive to term due to factors such as associated genetic conditions, heart defects, or other congenital anomalies. These risks result in a high rate of demise among affected pregnancies.

The likelihood of full recovery, moderate physical disabilities, or chronic respiratory issues exists but are less common outcomes compared to the substantial risks associated with the presence of cystic hygroma. Thus, the answer that highlights the statistical outcome related to nearly 90% of cases aligns with the significant risk of demise, underscoring the critical nature of detailed prenatal evaluation and genetic counseling in these instances.