From the case:
Air crescent sign
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![](https://prod-images-static.radiopaedia.org/images/314481/17bf67dd2f6dd93110e45ff9614e37_big_gallery.jpg)
An ill-defined mass surrounded by ground glass opacity in an immunocompromised patient is suspicious for a fungal infection.
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![](https://prod-images-static.radiopaedia.org/images/314475/40ad184b9d0cce1c5512a33a33135c_big_gallery.jpg)
An air crescent sign has developed indicating recovery.
- Note: This case has been tagged as "legacy" as it no longer meets image preparation and/or other case publication guidelines.
Case Discussion
Air crescent sign of recovering angioinvasive aspergillosis