Definition and clinical description
Symptoms and prevalence
Hydramnios (foetal diarrhoea) is usually present, with neonatal onset diarrhoea. The profuse watery stool is characterized by rich Na + and bicarbonate concentrations. The clinical forms of this congenital defect are poorly understood, may be transient but also particularly serious.
Prevalence is lower than 1/1,000,000,000, with fewer than 15 cases reported.