Echocardiographic features of cardiac compression by mediastinal pancreatic pseudocyst.

Echocardiogram of a patient who had retrocardiac compression by pancreatic pseudocyst is described both before and after drainage. Mass of echoes behind the anterior leaflet of the mitral valve and its disappearance after drainage of a pseudocyst have not been described in available literature. These findings mimic left atrial myxoma, and we discuss their differentiation in this case report.