Anyone familiar with EKG readings, and Inferior and lateral ST-T changes

Hi, does anyone know how to explain to me what is meant on an EKG testing  that reads, ST-T changes in the lateral leads. and T waves more pronouced than 1 year ago. Says changes due possibly to Myocardial Ischemia.
I am 54 and suffered a MI last month. I recently had a stress test and the results were allso abnormal and I have been referred to a cardiologist for more testing

I would appreciate any information anyone can send my way explaining what is meant by ST-T changes in Lateral Leads, and what does that signify? Thank you in advance.

                                                                               fluffypurrcat