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Turk J Gastroenterol. 2010 Dec;21(4):443-7.

A Turkish case of congenital chloride diarrhea with SLC26A3 gene (c.2025_2026insATC) mutation: diagnostic pitfalls.

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Department of Pediatric Gastroenterology, Hepatology and Nutrition, Başkent University, School of Medicine, Ankara.


Congenital chloride diarrhea is a rare autosomal recessively inherited disorder characterized by impairment of Cl-/HCO3- exchange in an otherwise normal distal ileum and colon. Infrequency of congenital chloride diarrhea makes diagnostics difficult. The typical presentation is watery Cl- rich diarrhea, hypochloremia, hypokalemia, metabolic alkalosis and failure to thrive. This is a report of a Turkish female infant who was falsely diagnosed with Bartter syndrome when she was two months old. Ibuprofen was commenced at that time. However, severe watery diarrhea, dehydration, failure to thrive, abdominal distention, and electrolyte abnormalities persisted. She was diagnosed with congenital chloride diarrhea based on high fecal Cl- level and SLC26A3 gene c.2025_2026insATC mutation at the age of eight months. Oral NaCl and KCl supplementation was started. Our patient is now 26 months old. Her growth and development are normal. Early diagnosis and treatment are essential for normal growth and development and prevention of other severe complications of congenital chloride diarrhea.

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