Air crescent sign
Updates to Study Attributes
Sagittal reformat from a CT scan of the chest, performed on a 14 year-old female with acute myeloblastic leukaemia.
The image shows aA rounded cavity in the apical right upper lobe, with a non-dependant soft-tissue nodule within it is noted. There is some subtle ground-glass opacity surrounding the lesion. There were several other similar lesions in the right lung (not shown).
Updates to Case Attributes
The imaging features, combined with the clinical history, are characteristic of invasive fungal infection, most commonly due to Aspergillus spp.. Care Care should be taken to avoid confusion with mycetoma, which occurs in patients with pre-existing lung cavities, is gravity-dependant, and lacks the ground-glass halo.
Invasive aspergillosis occurs in immunosuppressed individuals and carries a 65-90% mortality rate if improperly treated. Cavitation occurs in the recovery phase and thus tends to indicate a better prognosis.
-<p>The imaging features, combined with the clinical history, are characteristic of invasive fungal infection, most commonly due to <em>Aspergillus </em>spp.. Care should be taken to avoid confusion with <a href="/articles/mycetoma">mycetoma</a>, which occurs in patients with pre-existing lung cavities, is gravity-dependant, and lacks the ground-glass halo.</p><p><a href="/articles/invasive-aspergillosis">Invasive aspergillosis</a> occurs in immunosuppressed individuals and carries a 65-90% mortality rate if improperly treated. Cavitation occurs in the recovery phase and thus tends to indicate a better prognosis.</p>- +<p>The imaging features, combined with the clinical history, are characteristic of invasive fungal infection, most commonly due to <em>Aspergillus </em>spp. Care should be taken to avoid confusion with <a href="/articles/mycetoma">mycetoma</a>, which occurs in patients with pre-existing lung cavities, is gravity-dependant, and lacks the ground-glass halo.</p><p><a href="/articles/invasive-aspergillosis">Invasive aspergillosis</a> occurs in immunosuppressed individuals and carries a 65-90% mortality rate if improperly treated. Cavitation occurs in the recovery phase and thus tends to indicate a better prognosis.</p>
Systems changed:
- Paediatrics
- Oncology
Tags changed:
- fungus
- aspergilloma
Updates to Freetext Attributes
- Note: This case has been tagged as "legacy" as it no longer meets image preparation and/or other case publication guidelines.
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