On CT chest, the 'halo sign' is particularly associated with which condition in immunocompromised patients?
APulmonary hydatid cyst
BRound pneumonia
CBronchiectasis
DInvasive pulmonary aspergillosis
Which of the following diseases has the largest submerged portion in the iceberg model of disease?
AInfluenza
BChickenpox
CTetanus
DRabies
A 55-year-old woman presents with persistent cough, fever, and hemoptysis. Sputum shows branching septate hyphae. What is the likely pathogen?
AAspergillus fumigatus
BCandida albicans
CHistoplasma capsulatum
DMucor species
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