Massive pelvic hemangioma in a patient with blue rubber bleb nevus syndrome.

Blue rubber bleb nevus syndrome (BRBNS) is a rare disorder characterized by gastrointestinal and cutaneous hemangiomas. Patients typically present with gastrointestinal bleeding and anemia. Management of gastrointestinal bleeding may be challenging, since these lesions may be diffusely distributed throughout the gastrointestinal tract. The most common location is the small bowel, and recurrence is common. We describe a patient with BRBNS and lower gastrointestinal bleeding resulting from a large pelvic hemangioma eroding into the rectal wall.