Benign neonatal hemangiomatosis.

Diffuse neonatal hemangiomatosis is a serious multisystem syndrome of multiple cutaneous hemangiomas, visceral hemangiomatosis with arteriovenous shunts, high output congestive heart failure, thrombocytopenia with hemorrhage and central nervous system involvement. Some neonates with multiple cutaneous hemangiomas, however, may follow a benign course of spontaneous resolution without symptomatic visceral involvement. Such cases may be called benign neonatal hemangiomatosis.