An aggressive dural arteriovenous fistula manifested by unilateral subcortical calcification and cerebral edema: A case report oleh Yuya Kagawa, MD, Taichiro Imahori, MD, PhD, Reiichi Okino, MD, Tomoaki Harada, MD, PhD, Daisuke Yamamoto, MD, PhD, Shigeru Miyake, MD, PhD, Takashi Sasayama, MD, PhD