I know a few topics like this have been posted here, but none of them quite fit me exactly so i thought id try to start another one.

bascially im a 20 year old male, and have had this one swollen lymph node rigth above my right collarbone. its been swollen like that for id say 3 or so years and hasnt changed in size at all. its about a half inch in diameter, not hard, and doesnt hurt. i was just wondering if this was considered a normal sized lymph node, or if its something i should be concerned about.
thanks.