Huge Coronary artery aneurysm Demonstrated by 64-slice MDCT Coronary angiography: a case report

Coronary artery aneurysm is an uncommon disease. We present a case of an unusual huge saccular coronary aneurysm of the left anterior descending coronary artery detected by 64-slice multi-detector computed tomography (MDCT) coronary angiography, which initially presented as a mediastinal mass on chest X-ray. The true size of the aneurysm would have been underestimated by coronary angiography because it contains substantial thrombus. In our case, the clinical role of MDCT coronary angiography is more superior than the traditional coronary angiography. Coronary ar tery aneurysm is def ined as an abnormally dilated segment with a diameter 1.5 times greater than the normal adjacent artery segment; and it can be classified as fusiform or saccular [1]. Coronary artery aneurysms are typically diagnosed on coronary angiography. MDCT technology provides a noninvasive alternative to evaluate the abnormality of coronary artery. We present a case of an unusually huge saccular coronary aneurysm of the left anterior descending coronary artery which would have been underestimated by coronary angiography because it contains substantial thrombus.