**3. Epidemiological and demographic characteristics**

The frequency of ARSA varies throughout the world. In Europe, depending on the country, it has been found in 0.11% (Great Britain) [7], 0.16% (Greece) [8], 0.3% (France) [9], or 0.36% (the Netherlands) [10] of the population. Studies have also been performed on other continents: Asia, 0.1–0.2% of cases (respectively: China and Japan) [11, 12]; North America, 0.5% of cases (United State) [13]; or Australia and Oceania, 0.8% of cases (New Zealand) [14] (**Table 1**). However, its detection arguably depends primarily on the sensitivity of the diagnostic procedures employed, for example, cadaveric or CT versus chest X-ray examination.


**Table 1.** Frequency of aberrant right subclavian artery (arteria lusoria) in different populations.

The gender distribution of the aberrant right subclavian artery was found to be similar: 55.3% females versus 44.7% males [15].
