627 intracavitary coronary arteries: is it really a rare finding? a coronary ct study

Abstract Background The prevalence and clinical relevance of intracavitary coronary arteries coursing within the right ventricle (RV) or right atrial appendix are largely unknown. Only one study has described a prevalence of 17 cases on 31,748 patients (0,054%) by coronary CT angiography. Purpose The aim of the study was to assess in a population that underwent coronary CT (CCT) study, how many intra-chamber courses of coronary artery were observed. Methods All patients underwent a CCT study from April 2021 to August 2022 in a single center were enrolled. The CCT was performed by a 128-slices system and analyzed by a single operator with over 3 years of experience. Results out of 807 patients (41% female, 61.4±10.2 years) who underwent a CCT study, 14 patients with an intra-chamber coronary course were observed, with a prevalence of 1,73%. In particular, 11 had an intra-right ventricle course of the left anterior descending artery and 3 patients had the right coronary artery coursing within the right atrial appendix. Conclusions the intra-chamber course of coronary artery seems to be much more frequent than described in the scientific literature. The intra-right ventricle course of the left anterior descending artery may be the most frequently encountered anomaly.