A. Ilercil et al., CLINICAL-SIGNIFICANCE OF FOSSA OVALIS MEMBRANE ANEURYSM IN ADULTS WITH CARDIOEMBOLIC CEREBRAL-ISCHEMIA, The American journal of cardiology, 80(1), 1997, pp. 96
Fossa ovalis membrane aneurysm was diagnosed by transesophageal echoca
rdiography in 45 of 134 consecutive patients (34%) with embolic cerebr
ovascular ischemic events. A potential cardiovascular source of emboli
sm, other than the fossa ovalis membrane aneurysm, was found in 91% of
these patients (41 of 45).