Why is karyotyping performed on a fetus diagnosed with omphalocele?

Karyotyping is performed on a fetus diagnosed with omphalocele to identify chromosomal abnormalities. This is essential because omphalocele is a congenital malformation where the intestine or other abdominal organs protrude through the abdominal wall at the umbilicus. Such structural anomalies can be associated with various chromosomal disorders, including trisomies and other genetic syndromes.

By analyzing the chromosomes, healthcare providers can determine whether there is an underlying genetic cause that needs to be addressed, which can significantly impact the management and prognostic considerations for both the fetus and family. Understanding any chromosomal abnormalities helps in offering appropriate genetic counseling and guiding potential planning for the baby's care after birth.