H. Elkhouri et al., UNUSUAL CASE OF PROMINENT CHIARI NETWORK TRAPPED IN THE LEFT ATRIUM, Journal of the American Society of Echocardiography, 11(1), 1998, pp. 71-73
We describe a case of an unusually prominent Chiari network in a prema
ture neonate who was evaluated with echocardiography. The network, whi
ch is an embryologic remnant, was extensive, mobile, and moved in and
out of the right ventricle. Later, tissue strands passed the foramen o
vale and ultimately became trapped in the left atrium. The differentia
l diagnosis included thrombus, tumor, vegetation, and ruptured chordae
.