Today I was seen by a nurse practioner for a lump in my low back. Without any kind of diagnostic imaging, she said confidently that it was a lipoma and I should not worry. I was told to watch to see if it grew or changed shape.
I was told that because the lump is soft and movable and non-painful, that I should not worry. She told me that if the mass became harder, larger, or more immovable, that it should be checked out again.
From what I understand, lipomas are easily movable, soft, and nonpainful while liposarcomas are harder and more fixed. I do not know for certain that this is true but was told this by my np.