Hui-Ting Hsu1, Shu-Shong Hsu1, Chu-Chun Chien1, Ping-Hong Lai2. 1. From the Departments of Radiology (H.-T.H., P.-H.L.), Neurosurgery (S.-S.H.), and Pathology (C.-C.C.), Kaohsiung Veterans General Hospital; and the School of Medicine (P.-H.L.), National Yang-Ming University, Taipei, Taiwan. 2. From the Departments of Radiology (H.-T.H., P.-H.L.), Neurosurgery (S.-S.H.), and Pathology (C.-C.C.), Kaohsiung Veterans General Hospital; and the School of Medicine (P.-H.L.), National Yang-Ming University, Taipei, Taiwan. pinghonglai@gmail.com.