<s>[INST] I had a pet cardio stress test a week or so ago. I spoke with DR. and was told there a shadow on front part of my heart. Doctor said might be some blockage in the heart, or could just be a shadow from my breast. Dr recommends Angiogram going through the arm. Not sure what this really means. [/INST] yes to diagnose cardiac disease better tests are angiography and stress echocardiography...go for these .. </s>