PMC4356043_01
PET-CT showing hypermetabolic mass at the left side of the superior mediastinum, consistent with mycotic aneurysm of the aortic arch/left subclavian artery.
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Whole body positron emission tomography-CT (PET-CT) was performed, which revealed a new heterogeneous hyperdense mass at the left side of the superior mediastinum associated elevated fluorodeoxyglucose (FDG) uptake, consistent with mycotic aneurysm of the aortic arch/left subclavian artery; and patchy FDG uptakes are noted within the vertebral bodies of the cervical and thoracic spine, suggestive of possible bone involvement (Fig. 1).
Serial CXRs, taken 10 days apart (top) and contrast CT (bottom) showing rapid interval enlargement of the mycotic aneurysm.
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Serial CXR and CT (Fig. 2) showed rapid interval enlargement of aortic arch aneurysm.