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©2013 UpToDate ® Print Email Cerebellar hemangioblastoma: Angiogram Conventional angiogram of the cerebellar hemangioma pictured in radiograph 1, showing the extensive vascularity and typical tumor blush following contrast injection (left panel). Therapeutic embolization of the feeder vessels lessens potential bleeding complications during surgery. Following therapeutic embolization, the tumor blush is substantially reduced (right panel, red arrow). Courtesy of Eric T Wong, MD.