Misconception of 'malignant' and 'scissor-like compression' of interarterial course in anomalous aortic origin of a coronary artery: a case series.

This case series challenges the assumption that the interarterial segment of AAOCA is scissor-like compressed by both the aorta and PA. The decrease in MLA and FFR under stress is due to the aorta's unidirectional lateral compression on the intramural segment. Additionally, the term 'malignant' should not be universally applied to all AAOCA cases with an interarterial course, as not all result in haemodynamic significance.