Coronary artery anomalies overview: The normal and the abnormal

Table 4 Classification of coronary artery anomalies based on anatomical features

Coronary artery anomalies
Of ostium	Ostial atresia
	valve-like ridge
Of origin	From PA		RCA from PA
			LMCA from PA
			LAD from PA
			All from PA
			Accessory cor. from PA
	From aorta	SCA	SCA from LSV
			SCA from RSV
		RCA	RCA ectopic from RSV
			RCA from LSV
			RCA from PSV
		LMCA	LMCA from PSV
		LAD	LAD from RCA
			LAD from RSV
		LCX	LCX from RSV
			LCX from RCA
Of anatomy	Duplication		Duplication of RCA
			Duplication of LAD
			Duplication of LCX
Congenital absence	Congenital absence of LMCA
	Atresia LMCA
	Congenital absence of LCX
Hypoplasia	Hypoplasia of RCA and LCX
Of termination	Fistulae
	Systemic termination

PA: Pulmonary artery; RCA: Right coronary artery; LMCA: Left main coronary artery; LAD: Left anterior descending; SCA: Single coronary artery; LSV: Left sinus of Valsalva; RSV: Right sinus of valsalva; PSV: Posterior sinus of Valsalva; LCX: Left circumflex artery.