Significance of perilesional T1 hyperintense areas in the differential diagnosis of primary adult-type diffuse glioma: A case report oleh Akinari Yamano, MD, Kiyoyuki Yanaka, MD, PhD, Kuniyuki Onuma, MD, Kazuhiro Nakamura, MD, PhD, Nobuyuki Takahashi, MD, PhD, Hidehiro Kohzuki, MD, PhD, Noriaki Sakamoto, MD, PhD, Masahide Matsuda, MD, PhD, Eiichi Ishikawa, MD, PhD