Biventricular Non-Compaction Cardiomyopathy.

Left ventricular non-compaction (spongy myocardium) is one of the most misclassified cardiomyopathies. It is characterised by an excessively prominent trabecular meshwork of myocardium and deep intertrabecular myocardium due to an arrest in the compaction process of the myocardial fibres. It could be isolated i.e. without any other structural heart defects or associated with congenital heart defects. The clinical manifestations are variable heart failure, arrhythmia, thromboembolic phenomena depending on extent of non-compaction of cardiac segment.