Grossly, hemangioblastomas are generally well circumscribed with solid and cystic components. They are usually dark red-brown given extensive vascularity. Lipid-rich areas appear yellow brown. Courtesy of: Dr. Luciano de Souza Queiroz, Dept. of Pathology, Faculty of Medical Sciences, State University of Campinas (UNICAMP), Campinas, Sao Paulo State, BRAZIL. Additional images are here.