Gamuts

Cystic fetal abdominal mass

Choledochal cysts (a.k.a. bile duct cyst) are congenital conditions involving cystic dilatation of bile ducts. [Source: Wikipedia ]

May Be Caused by
 Common
Autosomal recessive polycystic kidney disease
Choledochal cyst
Hepatic cyst
Hydronephrosis
Hydroureter
Multicystic dysplastic kidney
Ovarian cyst
Ovarian tumor
 Uncommon
Anterior sacral meningocele
Hydrometrocolpos
Intestinal atresia
Meconium pseudocyst
Megacystic-microcolon-hypoperistalsis syndrome
Mesenteric cyst
Omental cyst
Sacrococcygeal teratoma
Splenic cyst
Umbilical vein varix
Urachal cyst
Ureterocele
Urinoma