Incidence of myocardial bridging in adults with benign / malignant coronary anomaly

Congress:

ESCR 2014

Poster Number:

449

Type:

Scientific Poster

Keywords:

Cardiac, Anatomy, CT, Normal variants, Congenital

Authors:

T. Breining, N. Egenrieder, M. Lieberknecht, S. A. Schmidt, M. Beer, K. Mild; Ulm/DE

DOI:

DOI-Link:

https://dx.doi.org/

Fig. 1: 3D-reconstruction of the coronary arteries of a 64 year old male patient with...

Fig. 2: 2D-reconstruction of the coronary arteries of a 64 year old male patient with...

Fig. 4: Straight MPR of the same patient as in Fig. 1-3. Demonstration of myocardial...

Fig. 3: Curved MPR of the same patient as in Fig. 1 & 2. Demonstration of myocardial...

Purpose

The term coronary artery anomaly (CAA) sums up all the rare variants of origins of the coronary arteries from the coronary sinus, the ascending aorta or the pulmonary artery (ALCAPA). The distinction of benign and malignant CAA refers to the course of the coronary artery either between two arterial vessels, e.g. aortic root and truncus pulmonalis (malignant anomaly), or between an arterial and a non-arterial vessel, e.g. aortic root and left atrium, or no second vessel at all (benign anomaly). The descent of an usually...

Methods and Materials

Retrospective analysis of 4811 consecutive cardiac CT examinations that were performed in our radiologic department in a span of 9.25 years. We identified 130 patients with CAA and their datasets were then analysed for the presence / absence of myocardial bridging.

Results

We identified a total number of 130 patients with CAA. Of those, 57 patients (43.8%) showed a malignant CAA, while 73 patients (56.2%) were diagnosed with a benign CAA. In our cohort, male patients were more often diagnosed with CAA (77 male vs. 53 female patients). The age of the patients at diagnosis of CAA ranged from 29 to 84 years old. Within the cohort of 130 patients with CAA, we detected 46 patients (35.4%) with myocardial bridging. A total of 53 myocardial bridges were...

Conclusion

Cardiac CT is an established and reliable method to identify and classify both coronary artery anomaly and myocardial bridging (2-4). In this retrospective analysis of 4811 patients we identified 130 patients with CAA and we determined an incidence of 35.4% for the presence of myocardial bridging in this exclusive cohort. There was no significant difference concerning the incidence of myocardial bridging in patients with benign (37.0%) or malignant (33.3%) coronary artery anomaly (p = 0.667).

References

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