This article reviews the anatomy of the potential spaces in the chest where abnormal air can collect, explains typical imaging findings, and describes the distinguishing features of conditions that require a differential diagnosis.
Authors: Masafumi Sakai, Takashi Hiyama, Hirofumi Kuno, Kensaku Mori, Tsukasa Saida, Toshitaka Ishiguro, Hiroaki Takahashi, Ken Koyama and Manabu Minami