Sequential chest computed tomography images in patient with invasive pulmonary mucormycosis presenting reversed halo sigh. (A) On 39th (−39th) day before the operation, chest computed tomography (CT) revealed ground-glass opacity (GGO). (B) On -28th day, chest CT revealed reversed halo sign (RHS) comprising both central GGO and the outer rim recognized as a ring-shaped high-density area replacing the outside parenchyma of GGO. (C) On -11st day, chest CT revealed RHS air crescent-like small air slit (the tip of an arrow) at the junctional area between GGO and the outer rim.
Okubo et al. Diagnostic Pathology 2013 8:82 doi:10.1186/1746-1596-8-82