Left ventricular noncompaction.

According to the World Health Organization classification of cardiomyopathies, left ventricular noncompaction is still an unclassified cardiomyopathy. In 2006, the American Heart Association classified this entity as a primary cardiomyopathy of genetic origin. In 2008, the European Society of Cardiology updated the classification scheme similar to the World Health Organization classification.

A ventricular septum filleted down the middle.

Trauma inflicted by sharp penetrating objects can cause unusual and complex injuries to the heart. We present a case where penetrating trauma caused an unusual ventricular laceration that filleted the ventricular septum into two separate sections creating an artificial chamber in between. The ventricular septal defect was clearly displayed with echocardiography and required special cardiac surgical intervention.