Question
Air crescent sign in chest X-ray is seen in:
| A. |
Blastomycosis
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| B. |
Pneumonia
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| C. |
Invasive aspergillosis
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| D. |
Bronchiectasis
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Show Answer
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Correct Answer � C
Explanation
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|
Ans. C: Invasive
Angioinvasive aspergillosis is the most severe and aggressive form of invasive aspergillosis and is seen only in profoundly immunocompromised patients and is a life-threatening condition requiring prompt treatment.
Typical appearances are those of solitary or multiple pulmonary nodules or masses. Wedge-like areas of ill-defined opacity may also be seen most likely representing infarcts due to invasion of proximal pulmonary vessels.
An air crescent may be visible, although it is seen earlier on CT.
