Constrictive pericarditis is rare in children. We report computed tomo
graphy (CT) and magnetic resonance imaging (MRI) findings in a 3-year-
old girl. She had a swollen abdomen that increased in two months. CT a
nd MRI showed a thickened pericardium (5.2 mm) without calcification.
Both atria were enlarged and ventricles were relatively small. The eng
orged inferior vena cava had 2.8x the diameter of the descending aorta
at the same level. Symptoms were dramatically improved after pericard
iectomy. The histopathological features confirmed chronic pericarditis
.