Ultrasonic humidifier lung with a reversed halo sign: A case report oleh Tsukasa Hasegawa, MD, PhD, Kai Ryu, MD, PhD, Taiki Fukuda, MD, PhD, Yuko Mizobuchi, MD, Lynn Yoshimatsu, MD, Ryo Sato, MD, Makiko Takatsuka, MD, Kyota Shinfuku, MD, Masami Yamada, MD, PhD, Yumie Yamanaka, MD, PhD, Yusuke Hosaka, MD, PhD, Aya Seki, MD, Naoki Takasaka, MD, PhD, Takeo Ishikawa, MD, Jun Araya, MD, PhD