Role of radiotherapy in hemophilic pseudotumor of the orbit.

Hemophilic pseudotumor is an encapsulated, chronic, slowly expanding hematoma usually seen in 1-2% patients with severe coagulative disorder (James et al., 2003). It usually occurs in soft tissues, muscles, tendons, and subperiosteal part of the bones. It slowly enlarges, develops a fibrous capsule, and destroys underlying tissues by progressive necrosis (James et al., 2003). Hemophilia is an X chromosome-linked hereditary disorder caused by defective synthesis or synthesis of dysfunctional factor VIII molecules (Harold et al., 2006).