Air crescent sign
| Air crescent sign | |
|---|---|
 | |
| The arrows denote an ill-defined nodular opacity in medial aspect of right upper lobe with ill-defined rim of lucency surrounding it | |
| Differential diagnosis | Aspergilloma |
In
air and has a round radiopaque mass.[1] Classically, it is due to an aspergilloma, a form of aspergillosis, that occurs when the fungus Aspergillus grows in a cavity in the lung.[2]
It is also referred as Monad sign.[3]
Additional images
References
- PMID 11152807.
- PMID 472287.
- ^ Goel, Ayush. "Pulmonary aspergillosis". Mediconotebook. Retrieved 29 May 2015.