Hydrops | Obstetrics & Gynecology
www.obgyn.columbia.edu › hydropsHydrops fetalis, or hydrops, is a condition in which fluid accumulates in different parts of the fetal body. There are two types: immune and non-immune. The immune type is caused by destruction of fetal red blood cells by the mother’s immune system. The non-immune type is more common and has a variety of causes, including viral infections, heart or lung abnormalities, and genetic conditions.