Accessory Pathway

Several years ago when I was about 40 years old, a Cardiologist told me that I had an "Accessory Pathway" in my heart. He prescribed a beta blocker and talked to me about ablation. He told me if I had an ablation, I would have to have a pacemaker. I kinda never went back...
Is an "Accessory Pathway" the same as "Wollf Parkinson White Syndrome"? Is a pacemaker always necessary if you get an ablation. Is an accessory pathway a congenital condition?