Author + information
- Received November 23, 2012
- Revision received December 10, 2012
- Accepted December 17, 2012
- Published online July 2, 2013.
- Feifei Sun, MD,
- Weidong Ren, MD,
- Wenjing Bi, MD,
- Ying Zhang, MD and
- Baosheng Guo, MD
A 25-year-old man presented to our institution with symptoms of fatigue and dyspnea on exertion. Two-dimensional transthoracic echocardiography (A, B, C, Online Videos 1, 2, and 3) showed a balloon-like accessory structure (arrow) attached to the anterior mitral valve leaflet. This “balloon” had a remarkable movement prolapsing into the mitral orifice during systole without the left ventricular outflow tract obstruction (Online Video 1). Doppler echocardiography demonstrated minimal mitral valve regurgitation (Online Video 2). Real-time 3-dimensional echocardiography (E, F, Online Videos 3 and 4) better revealed that the stereospherical structure (arrow) without obvious variability received chordal attachments from the anterolateral papillary muscle. After 9 months, there was no change seen by echocardiography. This valvular anomaly fits the description of mitral valvular blood cyst, and a large cyst found in an adult is extremely rare (1).
- Received November 23, 2012.
- Revision received December 10, 2012.
- Accepted December 17, 2012.
- American College of Cardiology Foundation