Complex sentence: If the ventral body wall fails to close, ventral body wall defects can resulst, such as ectopia cordis, a congenital malformation in which the heart is abnormally located outside of the thorax.
Split into simpler sentences: If the ventral body wall fails to close, results in ventral body wall defects, such as ectopia cordis. This is a congenital malformation in which the heart is abnormally located outside of the thorax.