We describe a case of a 42-year-old man, with a previous episode of angina and a 
normal ECG and serum cardiac markers, and a two months later finding of biphasic 
T wave in leads V2-V3 and deeply inverted T wave in V4-V5 at a asymptomatic 
occupational evaluation. This is a typical ECG pattern of Wellens' syndrome. A 
subsequent coronary angiography showed a critical stenosis of proximal left 
anterior descendent. We underline the careful value of prolonged observation in 
chest pain unit and repetitive ECG evaluation also during pain-free period after 
an angina episode, to exclude an earlier T wave pseudonormalization.