Bicuspid Pulmonic Valve and Pulmonary Artery Aneurysm.

Bicuspid pulmonary valves and pulmonary artery aneurysms are two rare entities, reported in association, and usually attributed to hemodynamic alterations caused by the bicuspid pulmonary valve. We present magnetic resonance images of a patient with a bicuspid pulmonary valve and pulmonary artery aneurysm, and propose an alternative mechanism for this association, based on recent embryologic studies that link anomalies of the semilunar valves and great vessels with derangement of the cardiac neural crest cell development.

Significance of anterior Q waves in left anterior fascicular block--a clinical and noninvasive assessment.

Background: Electrocardiographic (ECG) Q waves in V leads (V2 or V3) pose a diagnostic challenge in the presence of left anterior fascicular block (LAFB). Benign Q waves in the absence of coronary artery disease (CAD) primarily due to LAFB have been described. This study evaluates Q waves in the presence of LAFB.