(1) Department of Respiratory Medicine, Nishi-Kobe Medical Center 5-7-1, Kojidai, Nishi-ku Kobe, 651-2273, Japan;(2) Department of Pathology, Nishi-Kobe Medical Center 5-7-1, Kojidai, Nishi-ku Kobe, 651-2273, Japan
Abstract:
Background
The reversed halo sign may sometimes be seen in patients with cryptogenic organizing pneumonia, but is rarely associated with other diseases.