What are the causes of swollen lymph nodes for years?

DDx. The differential diagnosis (ddx) for swollen lymph nodes includes: infection, inflammation, cancer. More information is needed including a history and physical examination. If the lymph nodes are bothersome, imaging and a possible biopsy might be done.

Related Questions

If I had swollen lymph nodes for longer than 2 years they must be benign right?

Not Necessarily. I would see your doctor if this is the case. A variety of things can cause swollen lymph nodes and it is important to figure out if this could be something more serious. Read more...
Not always. While it is true that lymph nodes that remain stable in size are "more likely than not" to be cancerous, that is not an absolute rule. In fact, many lymphomas may grow very slowly and not demonstrate any appreciable change in size over a few years. I advise you to seek out medical evaluation, if for no other reason than peace of mind. Read more...
Get evaluated. It's not normal for anything to be swollen for more than 2 years, even lymph nodes. Something is causing them to be swollen. Please see your doc to figure out what. Read more...

Are painless swollen lymph nodes for 2 years likely yo be cancerous? No other symptoms. No other conditions related.

How big? That is a good long time. In a young woman it could be hodgkin's disease even with minimal symptoms. In an older patient it could be indolent non-hodgkin's lymphoma. This is worst case, but may be deserving of some work-up. Read more...