“…Eight additional cross-sectional studies utilizing this classification for LAA morphology in 2,210 patients (6 with CT and 2 with TEE), found a significant association with non-chicken-wing morphology and stroke in 5 series [3][4][5][6][7] and no significant difference in 3 other studies. [8][9][10] In this issue of Int J Cardiovasc Sci, Linhares et al, 11 readdress the question of LAA morphology and stroke risk studying 237 patients with transesophageal echocardiography (TEE), the gold standard and most clinical utilized tool for thrombus detection in patients with LAA thrombosis/stroke risk. In this paper, the possibility of simple characterization with TEE patients with less-thrombogenic LAA anatomy (smooth internal surface and sharp angulation -"the chicken wing morphology"), was associated with less significant clinical events compared with patients with "thrombogenic non-chicken LAA morphology" (11.2% vs. 25.2% -p = 0.005).…”