[Lani]

Thinker, or anyone who puts their"elbows on the table"

The skin over the elbows is one of the areas of the body where many bacteria live and I have read that it is considered more risky to put a needle in and take the fluid out than not to (the "egg" usually resolves on its own unless a needle is put in and the area subsequently gets infected--in which case an extensive surgery may be needed)

A case of "less is more"

So insisting you be sent to an orthopaedic surgeon if ANY other doctor wants to try to aspirate it (ask if it is something they do routinely in the course of a week)seems reasonable.

I have personally known people who developed infections in olecranon bursae because they were treated by doctors who were not specialized in the area and didn't know to "leave it alone"

Now if the area is red and the redness is streaking up your arm--that may be a different matter.

Also remember that there is a common warning to those with lymphedema NOT to have needles used on the affected arm.

So it seems there are many reasons not just to trust the opinion of a physical therapist or oncologist but rather ask to see someone specialized in the area. Orthopaedic surgeons treat bones, joints, ligaments, tendons and assorted other structures like discs, menisci and bursae. I think they would be the direction to aim.
I certainly do not recommend treatments (or nontreatments) but report on what I have read, try to provide information including which specialist might have experience, background and training in your problem. I try not to guess at diagnoses or opine, but your use of the word "egg" sort of made a buzzer go off in my head. Sorry if I overstepped.

Olecranon bursitis is a problem of its own (as is its overtreatment), but the combination of lymphedema and olecranon bursitis sounds like it needs expertise.

Hope this helped!