Luay, the diffuse ST elevation can happen in the case of a large MI, Myocarditis, Pericarditis, cardiac tissue injury or scar and this case

.
Pls add if you know more.Numan, good answer but unfortunately its not it, the angiography revealed normal coronaries, so its
not MI, nor post MI Aneurysm.
The suggestion of an aneurysm can hold if its caused by something other than MI like
HOCM [especially the Mid Cavity variant], but the patient doesnt have a Hx of HOCM, and there are no indicatives of an obstruction on the Ventriculogram.
The aneurysm of the LV caused by chronic
Chaga's disease is more like it since it can cause an apical aneurysm like the one seen, but ECG will often show an abnormality of conduction [arrhythmia like bundle block....] and can show ST-T wave changes, but not ST Elevation. and it usually causes such an aneurysm with a valvular lesion, such as a regurgitation which is not present in this case. How Chaga's disease affects Cardiac enzymes i have no idea??
You guys are focusing on the ECG findings while you should be focusing on the LV akinesia shown in the ventriculogram.
OK its not an aneurysm. Dig deeper guys.