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distinguished from it by a single observation. It is associated with ventricular aneurysm more often than one might expect on the basis of what is known concerning the individual frequencies of the two phe¬ nomena. This probably only means that infarcts of the kind which produce the one are in some respects like those that lead to the other." lé CONCLUSIONS 1. Ventricular aneurysm is not an unusual compli¬ cation of myocardial infarction.2. The most common location of the aneurysmal dilatation of the heart is the left ventricle and especially the anterior wall in the apical region.3. In four of the five cases reported there were aneurysms of the anteroapical region of the left ventricle.4. The electrocardiogram is constantly abnormal with findings corroborative of myocardial infarction.5. The persistent RS-T elevation in cases of antero¬ apical ventricular aneurysm may be found in the precordial leads.6. The RS-T displacement may be the result of continuous myocardial injury of the subepicardial or subendocardial ventricular wall. 7. Multiple precordial leads are suggested in all cases as an aid in the diagnosis of ventricular aneurysms.

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