Case Report: Not a Mediastinal Mass! a Ruptured Giant Coronary Aneurysm That Occurred in a Young Man


Yao Peng,Shen Cheng,Xu Zhi-Jie,Lin Yi-dan


IntroductionCoronary artery aneurysm (CAA) is a localized coronary artery dilatation that exceeds 1. 5 times the diameter of a standard adjacent segment or the largest coronary vessel. When the expansion is > 2 cm, it is called a “giant” coronary artery aneurysm. Giant coronary artery aneurysm rupture is extremely rare and fatal.Case presentationWe present a rare case of a 27 years old male with a giant coronary artery aneurysm rupture, but no catastrophic events occurred immediately. He was initially misdiagnosed as having a mediastinal mass with CT (computed tomography). The cardiac ultrasound showed no pericardial effusion. But The cardiac CTA (computed tomography angiography) showed a giant coronary aneurysm rupture with hematoma formation. He eventually underwent surgery and was followed up for 2 months without complications.ConclusionWe report this case of a ruptured giant coronary aneurysm because of its infrequent occurrence in coronary artery disease. It is tough to distinguish this disease from a mediastinal tumor, and chest MRI and cardiac CTA are crucial tests. Finally, surgical resection may be the right choice for coronary aneurysm rupture. More cases need to be reported to facilitate the preoperative diagnosis of this rare coronary aneurysm.


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