I Have An Existing Lipoma To My Left Upper Back.

I have an existing lipoma to my left upper back. It is approx. 10 cm in diameter. It is soft, non-tender and mobile. It first appeared 5 years ago and initially became the size of a "fried egg". It has grown slightly over the past year (more raised...approx. 2 cm in height). Recently, I have noticed a slight fullness and swelling to my left axilla. No pain or apparent lymph node swelling. No systemic symptoms. Have an evaluation with PCP and dermatologist upcoming. Any comments appreciated. David M.