Assertion: dilated coronary sinus | /r/CapableOf | impinge on the wall of the left atrium
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text: Another rare problem can then be encountered with a left SVC entering the coronary sinus in patients who have elevations of right atrial pressure and pulmonary hypertension in the presence of a dilated coronary sinus, which can impinge on the wall of the left atrium and create what appears echocardiographically and functionally to be a cor triatriatum with limitation of free flow from the pulmonary venous confluence across the mitral valve.