PMC9409939_01
A) Admission CTA images show 8.3 x 2.7 cm left renal hypoattenuation consistent with infarction (white arrow). Normal caliber thoracic aorta with mural thickening in the mid thoracic aorta with associated mild atherosclerotic plaque and 10x6 mm posterior eccentric thrombus within caudal thoracic aorta (red arrow). Tiny right lower pole renal infarct. B) At three month follow-up: A significant improvement in irregular eccentric thrombus in the posterior descending thoracic aorta with nearly resolved endophytic portion extending into the aortic lumen.
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A CTA of the chest, abdomen, and pelvis revealed a focal protruding noncalcified atherothrombotic lesion in the mid to distal segment of the descending thoracic aorta (Figure 1A). In three months, a repeat CTA showed almost complete resolution of the aortic lesion with a mild residual plaque on the adjacent aortic wall (Figure 1B).