Fifty-four cases with anomalies involving the coronary artery circulation were found among 18,950 autopsies during a 10-year period at the Los Angeles County Hospital. The purpose of this survey is to present the different types of coronary artery anomalies and to elucidate their practical clinical significance.

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The literature has been reviewed, and 58 autopsied cases of dissecting aneurysm of the aorta observed at the Los Angeles County Hospital over a ten year period have been carefully studied. Clinical-pathologic correlation has been attempted whenever possible, with emphasis on diagnostic features. The