Oblique vein of the left atrium – The Marshall vein

A 36-year-old woman with a medical history of partial anomalous pulmonary venous return (PAPVR) presented to our Emergency Department with chest pain and left arm numbness. The patient's vital signs, physical exam, ECG, chest radiograph, and laboratory work-up (including serum troponin levels) were all normal. Further evaluation with gated cardiac CT angiography (Fig. 1) demonstrated the patient's known PAPVR (not shown) as well as an...