PMC2655297_01
September 2005(CT Thorax): Halo sign. Note the so-called "halo sign", seen as a blush around the lesion. This sign is indicative of haemorrhage and highly suggestive of infection with an angioinvasive fungal organism.
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F1
In addition, classical findings of halo sign and signet ring sign were reported (Figures 1 and 2), in conjunction with strongly positive serology results (Table 1).
September 2005 (CT Thorax): Multifocal areas of infection.
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F2
In addition, classical findings of halo sign and signet ring sign were reported (Figures 1 and 2), in conjunction with strongly positive serology results (Table 1).
October 2005 (CT Thorax): Resolution of areas of consolidation and "signet ring sign". The signet ring sign is a finding seen on CT scans of the thorax. It consists of a small circle of soft tissue attenuation that abuts a ring of soft tissue attenuation surrounding a larger low attenuating circle of air and is indicative of bronchiectasis.
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F3
Follow-up CT scans in Oct 2005 (Figure 3) and more recently February 2006 showed marked improvement in the original areas of invasive aspergillosis and some residual ground-glass shadowing.