We present a case of non-immune fetal hydrops with abdominal ascites and hydrocele. After amniocentesis the karyotype and microarray came back as normal, however the whole exome sequence (R21) detected a gene mutation in keeping with Kabuki syndrome. Postnatally the hydrops resolved, however the baby had other features in keeping with Kabuki syndrome that could not have been detected by prenatal ultrasound (gastroesophageal reflux, hearing loss, ASD, pseudoarthrosis of right clavicle).
