Malignant hemangioendothelioma

Hemangioendothelioma is believed to be a neoplasm of borderline malignancy. We present a 3-year-old boy with bilateral lower leg pain and walking with limping gait. Plain radiographs showed multiple osteolytic, expansile lesions in humerus, femur, tibia, ribs and mandible. MRI showed these lesions with mixed signal intensity and heterogenous enhancement after contrast medium administration. Pathological studies revealed malignant hemangioendothelioma.