Beating the odds: Rare prolonged survival of truncus arteriosus: A case report with literature review.

Rationale: Truncus arteriosus is a cyanotic congenital heart disease in which the great vessels of the heart fail to separate in utero. Consequently, a single truncal vessel arises from the heart to supply the systemic, coronary, and pulmonary circulations. This lesion causes the total mixing of oxygenated and deoxygenated blood, with an early onset of pulmonary vascular disease.