Sugie T, Miyaguni S, Tsuchiya N, Chinen Y, Inafuku H, Maeda T, Furukawa K, Wada N, Nishie A:
Syphilitic descending aortic aneurysm presenting with characteristic double-ring sign on CT: Radiologic–pathologic correlation.
Radiology Case Reports Volume 21, Issue 10, October 2026, Pages 4378-4382. https://doi.org/10.1016/j.radcr.2026.06.092.