Hemorrhagic Complications in a Rapidly Growing, Congenital Hemangiopericytoma

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Abstract
A 3-week-old infant had a massive hemangioma-like vascular neoplasm that had enlarged rapidly since being noted at birth. Less than a day after this initial evaluation the tumor underwent spontaneous ulceration and the infant had a near-fatal hemorrhage. Histologically, the tumor was a spindle cell neoplasm most consistent with the diagnosis of congenital hemangiopericytoma. Local excision appears to have been curative after almost two years of follow-up. The case is instructive in pointing out the importance of considering nonhemangioma vascular neoplasms in the evaluation of newborns with vascular tumors.