Help, what is this?

[bevaschia]

HI. I don't know which side your mother's mastectomy was and if the lump on the arm was on the same side. Here in the states (at least my experience) the doctors say never to have blood draws, shots, blood pressure checks on the side where the sentinel node was removed because it is no longer there to fight infection. Also, try very hard not to get infections on that side due to cuts, slivers, etc. It can cause great lymphedema problems.