Figure 4From: The trabecula septomarginalis (Leonardo’s cord) in abnormal ventriculo-arterial connections: anatomic and morphogenetic implications TF with pulmonary atresia. The IS is deviated anteriorly and is attached to the AL of the TSM as a free standing structure producing pulmonary atresia. The PL is committed to the VIF which stops short of the PL and there is tricuspid-aortic continuity.Back to article page