label: Abnormal coronary sinus morphology
label_lc: abnormal coronary sinus morphology
description: "An abnormality of the coronary sinus, which is formed by the union of the great cardiac vein and the left marginal vein and terminates in the right atrium. The coronary sinus functions to o collect deoxygenated blood from the myocardium of the heart and drain it into the right atrium."