Deep vein thrombosis in a child with Down syndrome: A case report

We report on the case of iliofemoral popliteal vein thrombosis in a child with Down syndrome who had surgery for a congenital heart defect. She was readmitted to our hospital because of gastroenteritis and generalized tonic-clonic seizures at age 14 months. On the second day of hospitalization, color Doppler ultrasonography revealed right iliofemoral and popliteal vein thrombosis. She was treated successfully with intravenous fluids and low-molecular-weight heparin. No predisposing factor other than dehydration could be found in the patient. We suggest that dehydration should be kept in mind as a cause of deep-vein thrombosis in patients with severe dehydration.