Toward defining pulmonary sequestration in infancy using two-dimensional echocardiography and novel high temporal resolution "keyhole" three-dimensional magnetic resonance angiography.

This article describes a rare case of pulmonary sequestration presenting in infancy with mixed systemic and pulmonary venous drainage. This case illustrates the clinical application of the high temporal resolution three-dimensional "keyhole" magnetic resonance angiography technique in the neonatal age group to achieve a diagnosis noninvasively. Further insight into the classification of pulmonary sequestration is also given.