title: Giant Right Coronary Artery Aneurysm Mimicking a Mediastinal Cyst With Compression Effects: A Case Report.
abstract: BACKGROUND
  Giant coronary artery aneurysm is an extremely rare form of coronary artery disease. The most common cause of coronary artery aneurysms is atherosclerosis. Although it is usually asymptomatic, it may have various clinical presentations, including angina, myocardial infarction or sudden death.
  
  
  METHODS
  A 32-year-old woman presented with edema of the upper and lower limbs, palpitation, and chest pain, and was diagnosed with a giant right coronary artery aneurysm that had initially mimicked a mediastinal cyst. Although computed tomography (CT) suggested a mediastinal cyst, trans-thoracic echocardiography revealed an extra pericardial cyst. The definitive diagnosis of right coronary artery aneurysm was made based on CT angiography and coronary angiography findings. As treatment, aneurysmectomy was performed, and she was discharged on the sixth postoperative day with good general health condition.
  
  
  CONCLUSIONS
  Coronary artery aneurysm should be a differential diagnosis in cases of mediastinal cyst and mass lesion.
authors: Department of Cardiothoracic Surgery, Guilan University of Medical Sciences, Rasht, IR Iran.
authors: Heidar
authors: H
authors: Dadkhah Tirani
authors: Department of Cardiothoracic Surgery, Guilan University of Medical Sciences, Rasht, IR Iran.
authors: Manouchehr
authors: M
authors: Aghajanzadeh
authors: Department of Cardiology, Guilan University of Medical Sciences, Rasht, IR Iran.
authors: Reza
authors: R
authors: Pourbahador
authors: Student Research Committee, Guilan University of Medical Sciences, Rasht, IR Iran.
authors: Rasool
authors: R
authors: Hassanzadeh
authors: Department of Cardiothoracic Surgery, Guilan University of Medical Sciences, Rasht, IR Iran.
authors: Hannan
authors: H
authors: Ebrahimi
keywords: Coronary Aneurysm; Coronary Angiography; Echocardiography; Mediastinal Cyst