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Case one A 54-year-old female outpatient was referred to our hospital for Chest discomfort.She had hypertension for 7 years,which was treated irregularly.The patient was a nonsmoker.Routine blood sample analyses were in normal ranges.An coronary angiography showed almost normal coronary artery,A left atrial anomalous band(LAAB)showed when we observed all the post-processing images(Figure 1).