The pentalogy of Fallot is a variant of the more common tetralogy of Fallot, comprising the classical four features with the addition of an atrial septal defect or patent ductus arteriosus.
The five features therefore are:
1. Ventricular septal defect (VSD)
2. Right ventricular outflow tract narrowing or complete obstruction
3. Right ventricular hypertrophy
4. Over riding aorta
5. Atrial septal defect (ASD).

Keywords: Pentalogy of Fallot; VSD; Right ventricular outflow tract narrowing; Right ventricular hypertrophy; Over riding aorta; ASD.