Normokinetic biliary dyskinesia: a novel diagnosis.

Background: Biliary dyskinesia diagnosed with CCK-HIDA scan and ejection fraction less than 35 % has been successfully treated by laparoscopic cholecystectomy. However, a population of patients with symptomatic biliary pain and a normal CCK-HIDA scan never receive a diagnosis, and thus no definitive treatment. Some of these patients report a reproducible pain during their CCK-HIDA scan.