CFTR and cystic fibrosis: <h4>Background</h4>Cystic fibrosis (CF) is an autosomal recessive disorder caused by mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) gene, leading to multi-system involvement.<h4>Case report</h4>A 4-year-old girl presented with a 2-day history of abdominal pain.