Surgical errors contribute a significant burden to health systems worldwide. 1 A large proportion of this burden is a result of patient-related complexities, which include "difficult or unusual anatomy" otherwise referred to as anatomical variations. 2 Anatomical variations are deviations from the typical arrangement of anatomical structures. 3 These variations are present within populations, and no two individuals have exactly the same anatomy. 4 Although the cause is still unclear, it is thought that humans are susceptible to a higher degree of anatomical variability more than most species. 5,6 Anatomical variation is likely the result of a combination of genetic and environmental factors interfering with the embryological development of anatomical structures. 6,7 However, such disruption is also the cause of pathological congenital abnormalities like structural cardiac defects and organ atresia. It is, therefore, important to distinguish an anatomical variation from other pathologic aberrations, as the former does not result in a demonstrable impairment in normal functioning. 7