Critical titers are associated with significant risk of fetal anemia and hydrops. Rh disease is the only immune cause of hydrops fetalis. These are typically signs of hydrops fetalis. Cystic hygroma can be associated with a nuchal lymphangioma or a fetal hydrops. The name "mirror syndrome" refers to the similarity between maternal edema and fetal hydrops. Corneal transplantation is not usually indicated during corneal hydrops. Rh disease is an currently an uncommon cause of immune-mediated hydrops fetalis. It describes the unusual association of fetal and placental hydrops with maternal preeclampsia. The deficiency has presented as hydrops fetalis and HELLP syndrome in fetuses. Endolymphatic hydrops is a disorder of the inner ear. Hydrops fetalis can be diagnosed and monitored by ultrasound scans. Farm Sanctuary claims increased rates of hydrops fetalis, Large Offspring Syndrome, and other systemic abnormalities. Fetal hydrops can be a cause, or conversely a complication. A species of South American snake, "Hydrops martii", is named in his honor. Complications may include ovarian torsion, testicular torsion, or hydrops fetalis.