Iatrogenic Giant Coronary Artery Pseudoaneurysm With “Daughter Aneurysm” Formation: Serial Imaging Findings and Natural HistoryCabarrus, Miguel BS*,†; Yang, Bo MD, PhD‡; Schiller, Nelson MD§; Miller, D. Craig MD‡; Ordovas, Karen MD†Journal of Thoracic Imaging: November 2012 - Volume 27 - Issue 6 - p W185–W187 doi: 10.1097/RTI.0b013e318255002c Web Exclusive Content-Case Reports: Cardiovascular Abstract Author Information Coronary pseudoaneurysms rarely occur spontaneously; rather, they are more commonly seen as a complication of coronary intervention. We present a case of a giant right coronary artery pseudoaneurysm with partial thrombosis after arterial perforation during percutaneous intervention for acute myocardial infarction and formation of a “daughter aneurysm” due to a contained rupture 12 years later. Right coronary pseudoaneurysm repair and coronary artery bypass grafting were eventually performed 16 years after the acute event. Cardiac magnetic resonance imaging, coronary computed tomography angiography, and autopsy findings are shown. *School of Medicine †Department of Radiology §Division of Cardiology, University of California San Francisco, San Francisco ‡Department of Cardiovascular and Thoracic Surgery, Stanford University, Stanford, CA The authors declare no conflicts of interest. Reprints: Karen Ordovas, MD, Department of Radiology, University of California San Francisco, 505 Parnassus Ave, San Francisco, CA 94143-0628 (e-mail: firstname.lastname@example.org). © 2012 Lippincott Williams & Wilkins, Inc.