Malignant RCA. Because of risk of scd?

I was having Gastric issue however as a precaution I underwent CT Angio being overweight. However, my CT found abberant origin of RCA from left aortic sinus, about 7mm anterior to the origin of left main artery. The proximal end of the artery courses in between aortic root and RVOT. Radiologist described it as "MALIGNANT RCA". However, my normal cardiologist took it casually that it is rare and can either cause death or can stay normal. I took second opinion and he said the same and said no need of surgerical treatment. However, AIIMS doctor told me to have stress thallium test but the results were satisfactory. However, there is still risk of SCD. Should I go for another opinion and get operated because of risk of SCD? Also the report says "MALIGNANT RCA" which scares me of SCD.