Cavernous malformation of the optic chiasm with continuous hemorrhage in a pregnant woman: A case report oleh Yusuke Tomita, MD, Kentaro Fujii, MD, PhD, Kazuhiko Kurozumi, MD, PhD, Ryoji Imoto, MD, Takashi Mitsui, MD, PhD, Sakurako Mishima, MD, Kenichi Inagaki, MD, PhD, Hisashi Masuyama, MD, PhD, Isao Date, MD, PhD