If the Lipoma Under the Arm is Effecting the Brachial Plexus then What ?

Removal of ANY mass involving the brachial plexus, the major nerve supply to the arm, is a very challenging operation. It needs to be preceded by a careful neurological examination documenting present nerve and muscle function and by a MRI to show the exact location of the mass and if it is stuck to or invades the nerves and local blood vessels. Finally, it needs to be done by a neurosurgeon or very experienced hand surgeon. Dr. Peter A Aldea

If what you say is true, you have a rare condition and need to have the lipoma removed by a very experienced surgeon who does alot of peripheral nerve work such as a neurosurgeon, or some hand surgeons.