Correct!
1. The thoracic CT shows that the nodule seen at presentation chest radiography is associated with vessels

The right middle lobe nodule seen at chest radiography is seen to be circumscribed and avidly enhancing at CT, and is closely associated with enhancing vasculature. The enhancing nodule does not show internal cavitation, nor is there surrounding ground-glass opacity to suggest that the “ground-glass opacity halo” sign (an imaging feature commonly associated with hemorrhagic lesions, such as angio-invasive fungal infections in immunocompromised hosts or metastatic lesions from highly vascular tumors) is present. The nodule shows homogeneous enhancement- the “reverse halo” or “atoll” sign, which presents as an incomplete or complete ring of consolidation surrounding ground-glass opacity, is not evident. No evidence of cystic change within the right middle lobe is seen.

Regarding the assessment of the thoracic CT findings, which of the following is most accurate? (Click on the correct answer to be directed to the seventh of ten pages)

1. The imaging appearance of the lesion is consistent pulmonary malignancy
2. The imaging appearance of the lesion is consistent with a pulmonary artery aneurysm
3. The imaging appearance of the lesion is consistent with allergic bronchopulmonary aspergillosis
4. The imaging appearance of the lesion is consistent with an arteriovenous malformation
5. The imaging appearance of the lesion is non-specific and not diagnostic of any particular disorder

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