Final answer:
The two most frequently encountered congenital heart lesions diagnosed in adults are Atrial Septal Defect (ASD) and Ventricular Septal Defect (VSD).
Step-by-step explanation:
The two most frequently encountered congenital heart lesions diagnosed in adults are Atrial Septal Defect (ASD) and Ventricular Septal Defect (VSD).