Transient gall bladder dilatation associated with hypokalaemia in a patient with Bartter syndrome.

A 5.5-month-old male infant with hypokalaemia and gall bladder dilatation is reported. The child was shown to have Bartter syndrome. After oral treatment with potassium and indomethacin, serum potassium levels became low normal and the gall bladder enlargement resolved. This entity should be included in the clinical spectrum of neuromuscular disturbances resulting from hypokalaemia and should be considered in a hypokalaemic infant with a right-sided abdominal mass.