What is known on this subject?
A double-contour sign on chest radiography is characterized by two curvilinear densities on the cardiac site, often visualized as a retrocardiac opacity.
What this clinical images adds?
A double-contour sign on the cardiac site on chest radiography may indicate giant hiatal hernia.
Ethics
Informed Consent: Informed consent was signed by the patient for this report.
Financial Disclosure: The author declared that this study received no financial support.
References
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Mitiek MO, Andrade RS. Giant hiatal hernia. Ann Thorac Surg. 2010;89:S2168-S2173.
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Gönlügür U, Yılmaz M, Reşorlu M, Kapıcıbaşı HO. Bilateral double contour on the cardiac borders and a review of the literature. Troia Med J. 2022;3:30-32.
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Hirata K, Shimabukuro Y, Takahashi T, Wake M. Syncope due to intracavitary left ventricular obstruction secondary to giant esophageal hiatus hernia. Am J Med Case Rep. 2017;5:89-93.
