CAT: cold agglutination test
All patients had no congenital or acquired heart disease with normal
sizes of the cardiac chambers and normal left and right ventricular
functions during the clinical course. The left ventricular ejection
fractions were 62-72%. Right ventricular area changes were 43-47%, In
all the cases, the thrombus was located in the middle of the right
ventricle, adjacent to the tricuspid chordae tendineae. The thrombus
seemed to be surrounded by a net-pocket like structure, formed by the
surrounding tissue. Thrombus movement is somewhat limited by multiple
attachments, different from the swing movement attaching to a single
pedicle, typically seen in myxoma. Morphologically, the thrombus and its
attachment to the surrounding tissue can be imagined quite like a neuron
and its dendrites. Most of the thrombus has a slightly stronger
med-echogenicity, except one case in which it was heteroechoic and
hypoechoic. All the thrombi were spherical, with irregular edges and
non-compliant. The thrombus is non-capsulated and has no flow within the
thrombus. The thrombus in each of the 5 cases were nearly 10-20 mm. No
lower limb thrombosis was found in the ultrasound studies of any of the
5 patients. See Table 2 for the echocardiogram results.
Table 2 ultrasonic data of patients