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Right Aortic Arch with Mirror-image Branching in Adults: Evaluation Using CT
Toshihiko Hayashi, Tamaki Ichikawa, Hiroshi Yamamuro
1Department of Radiology, Tokai University School of Medicine, 143 Shimokasuya, Isehara, kanagawa 259-1193, Japan. imaiy@is.icc.u-tokai.ac.jp.
The Tokai Journal of Experimental and Clinical Medicine
|April 12, 2018
Summary
Right aortic arch with mirror-image branching (RAMI) is extremely rare in adults, found in only 0.018% of CT scans. Some RAMI cases present with congenital anomalies or acquired cardiovascular diseases.
Area of Science:
- Cardiovascular Radiology
- Anatomical Variations
Background:
- Right aortic arch with mirror-image branching (RAMI) is a rare congenital anomaly.
- Understanding its prevalence and associated pathologies is crucial for clinical management.
Purpose of the Study:
- To evaluate the radiological findings and clinical significance of RAMI in adults.
- To determine the incidence of RAMI in adult populations.
Main Methods:
- Retrospective review of computed tomography (CT) reports and images.
- Assessment of RAMI incidence in adult patients across three university hospitals.
- Evaluation of associated congenital and acquired cardiovascular diseases.
Main Results:
- 27 adult cases of RAMI were identified.
- RAMI incidence was found to be very low (0.018% to 0.012%) in the studied population.
- Associated findings included high aortic arches, aortic diverticulum, tetralogy of Fallot, aberrant left brachiocephalic vein, and vascular rings.
Conclusions:
- RAMI is an exceptionally rare finding in adult CT examinations.
- RAMI can be associated with various congenital anomalies and acquired cardiovascular conditions.
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