Can childhood infection cause permanently swollen Lymph Node in neck?

I've recently had loads of stress due to an enlarged lymph node on the left side of my neck. Seen the doctor a couple of times and the blood test came back fine. he's sending me to a ear nose and throat specialist next week, and i'm going mad with worry! I haven't had any other symptoms like fatigue or night sweats.

When I was a kid I had a infection that made the lymph node on my neck swell up like a golf ball, so I'm wondering if this could cause the lymph node to feel permanently swollen?

Thanks

I have a lymph node in my neck which has never gone down to its original size due to having mumps as a child, it feels huge compared to the one on the other side of neck. Hope this helps releive your worries slightly.

L.x