Pelvic pseudotumor and pseudoaneurysm in a pediatric patient with moderate hemophilia B: Successful management with arterial embolization and surgical excision

Development of pseudotumors is an unusual complication of hemophilia. Treatment is controversial, especially in patients with large proximal lesions. Surgery, while curative, can be associated with massive intra-operative bleeding, infection and amputation. Arterial embolization of blood vessels supplying the pseudotumor may reduce these complications. Herein, we report a 14-year-old patient with moderate hemophilia B with a pelvic pseudotumor and pseudoaneurysm that failed conservative management with factor replacement alone. He was successfully treated with Bead Block and coil embolization followed by surgical extirpation of the lesion 24 hr later.