You conclude the diagnosis is tetralogy of Fallot. This anomaly occurs in about 9.6/10,000 births and is the most frequent anomaly of the outflow tract (Sadler, 2015).

Taken together, your patient has four major cardiac defects. Label the four anomalies seen in this condition.

But wait! You notice one more abnormality while analyzing the medical image of your patient related to the following circled structure.

Identify this structure.