WAlagille syndrome
WAnnular pancreas
WBile duct hamartoma
WBiliary atresia
WCholedochal cysts
WDuodenal atresia
WEsophageal atresia
WEsophageal web
WFundic gland polyposis
WHereditary pancreatitis
WHiatal hernia
WHirschsprung's disease
WImperforate anus
WIntestinal atresia
WJohanson–Blizzard syndrome
WMacroglossia
WMeckel–Gruber syndrome
WMeckel's diverticulum
WPyloric stenosis
WSchatzki ring
WTracheoesophageal fistula