The diagnostic hallmark of neurofibromatosis 2 (NF2) is bilateral vestibular schwannomas. However, patients with unilateral vestibular schwannoma meet the diagnostic criteria for NF2 if they also have multiple meningiomas as seen in this post-contrast sagittal CT image. Courtesy of: Dr. Luciano de Souza Queiroz, Dept. of Pathology, Faculty of Medical Sciences, State University of Campinas (UNICAMP), Campinas, São Paulo State, BRAZIL. Additional images are here.