Reversed Halo Sign in Invasive Pulmonary Fungal Infections

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Computed tomography scans of documented pulmonary mold infections were reviewed for the presence of the reversed halo sign, a focus of ground-glass attenuation surrounded by a solid ring. The reversed halo sign was an early sign, seen in ∽4% of patients with pulmonary mold infections, usually with zygomycosis.

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