Assens P, Frydman R, Bessis R, Hajeri H, Vial M, Papiernik E
J Gynecol Obstet Biol Reprod (Paris). 1979 Jan-Feb;8(1):51-3.
It is possible with echotomography to make out fetal ascites in the last months of pregnancy. One of the causes of combined fetal ascites and hydramnios among several other possible ones is primary meconium peritonitis, which diagnosis can be confirmed after birth.