Hello,
Lipomas are benign fatty tumors and they appear and disappear on their own. If however you start getting painful nodes on the knee then other possibilities like erythema nodosum need to be ruled out.
Erythema nodosum results in reddish, painful, tender lumps most commonly located in the front of the legs below the knees. If the symptoms are severe then please get it evaluated from a dermatologist.
I hope it helps. Take care and regards.
How did the dermatologist come to the conclusion that it was a lipoma? I ask because I think I have one on my neck and it's big... soft mushy feeling. I've seen a doctor once for it and she wants to do a sonogram on it, but I don't have the money for that right now. It's not painful at all. Lipomas are banign from what I understand.
I doubt yours "moved". I think your first one went away and you now have a second one.
Thanks.