Can it be dangerous to remove a lipoma located along the spine?

Yes.  Contact your surgeon ASAP.Hopefully you don't have any more systemic signs - such as fever, chills, sweats, etc.  Bruising and swelling are common after many surgical procedures but it's often a question of degree - how much, is it increasing, is there an implant (even minor...

Lipomas are benign fatty tumors that occur under the skin and less commonly within the muscle. They are associated with mild discomfort and a lump underneath the skin. It is always best to talk to an expert plastic surgeon to determine whether the lipoma is possibly a cyst or a tumor or hernia....

Most likely it is a lymph node or some other benign growth that will not be dangerous -  but you're right to be concerned.  I would advise that you see your family doctor expeditiously (ie, soon!) to have it checked out.  The worry alone justifies having it looked it and, in the...