RT Journal Article SR Electronic T1 An intriguing intracardiac mass in a woman with atrial fibrillation JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 693 OP 693 DO 10.1136/heartjnl-2015-308704 VO 102 IS 9 A1 Fabio Chirillo A1 Michele Fusaro A1 Giovanni Morana A1 Zoran Olivari YR 2016 UL http://heart.bmj.com/content/102/9/693.abstract AB Clinical introduction A 74-year-old hypertensive woman presented with shortness of breath. There was no associated coughing, chest pain or fever. ECG identified atrial fibrillation with rapid ventricular response. A transoesophageal echocardiogram was scheduled to exclude thrombus before cardioversion (FigureĀ 1A); however, an echogenic structure was seen (FigureĀ 1B arrow, see online supplementary video 1) between the left atrium, the pulmonary artery and the aortic root.Question Which of the following is the most likely diagnosis? Aortic valve endocarditis with annular abscessLeft atrial appendage thrombusLeft atrial myxomaPulmonary embolismFor the answer see page 727For the question see page 693