Myxopapillary ependymoma with a perivascular pseudorosette. The cellular processes of the tumor cells extend centrally towards a hyalinized blood vessel. There is abundant stromal mucin. The most common presenting symptoms of myxopapillary ependymomas are lower back, leg, or sacral pain. About a quarter of patients present with leg weakness or sphincter dysfunction. 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.