[A successfully treated case of Wolff-Parkinson-White syndrome with Ebstein's anomaly complicated with protein-losing gastroenteropathy].

A 17-year-old male underwent the division of the double accessory pathways under the diagnosis of Wolff-Parkinson-White (WPW) syndrome. At this time, we perceived that Ebstein's anomaly was combined with WPW syndrome, but we didn't treat Ebstein's anomaly, because it was slight. After this operation he relieved from the tachycardia attack completely. Ten months later, he was re-admitted to our hospital because of cardiomegaly and systemic edema. Hypoproteinemia was pointed out. On the basis of the intracardiac catheterization and 131I-RISA test, it was made to be sure that hypoproteinemia was caused by the protein-losing gastroenteropathy due to the tricuspid valve regurgitation of Ebstein's anomaly. After the tricuspid valve replacement with Hancock valve, protein-losing into the gastrointestinal tract disappeared. The aggravation of the tricuspid regurgitation was unrelated to the division of the accessory pathways, and was caused by the natural course of Ebstein's anomaly.