[Postural changes during echocardiography. Is this manoeuver necessary in the differential diagnosis of fixed and free floating thrombus?].

A case of a 62 year-old woman with mitral stenosis and thrombosis of the left atrium diagnosed by two-dimensional echocardiography (2D-Echo) is reported. During the procedure, postural changes were performed and characterized the thrombus as floating one. The postural changes during 2D-echo examination allows differential diagnosis among fixed and free floating atrial thrombus. Such postural manoeuvres are also important in evaluating prognosis and therapeutic management of mitral stenosis.