A patient with a history of old tuberculosis presents with hemoptysis. Radiology shows a 'monod sign' (air crescent) in a lung cavity. This is most likely:
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Correct answer: An aspergilloma, or fungus ball
An aspergilloma is a non-invasive mass of fungal hyphae that grows within a pre-existing lung cavity. The 'monod sign' describes the air space surrounding the fungus ball within the cavity.
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More Fungal Infections questions
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