Air Crescent Sign (Synonym: Air Meniscus Sign)
Reference work entry
DOI: https://doi.org/10.1007/978-3-540-35280-8_81
Air in a crescent shape in a nodule or a mass, separating the outer wall of the lesion from an inner sequestrum. It is most frequently seen in an aspergillus infection and interpreted as sign for an increasing recovery of the immune reaction of the host against the pathogen.
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© Springer-Verlag Berlin Heidelberg New York 2008