Hydrops of the gallbladder in an adult with Kawasaki disease.

An acute, febrile, self-limited disease process occurred in an otherwise healthy young adult that satisfies accepted criteria for the diagnosis of Kawasaki disease. Unusual features of this case include the patient's age and the documentation of notable, acute noncalculous distention of the gallbladder, a recognized complication of the condition. Evidence of cystic-duct obstruction during the acute phase of distention and subsequent establishment of patency during the convalescent stage is provided with the use of serial ultrasonographic and radioisotopic studies. Discussion of the possible mechanisms for acute hydrops of the gallbladder in Kawasaki disease is included and the need to consider this diagnosis in young adults with the appropriate clinical manifestations is underscored.