less common patterns included trabeculations between the ventricular septum and the posteromedial papillary muscle in 10 hearts ( 2 % ) , the ventricular septum and the anterolateral papillary muscle in 2 , the free wall and the posteromedial papillary muscle in 2 , the two papillary muscles in 1 and the apex and the ventricular septum in 1 .
C0018787
hearts
C0225870
ventricular septum