I had an MRI guided, core breast biopsy taken January 26th.  Ever since then, I have had a plethora of problems.  I have suffered generalized weakness throughout the arm my IV was inserted.  That progressively worsened to the point I could no longer hold a pen, and sharp, shooting pains started in my elbow and hand.  I also had an odd sensation in my right side while breathing.  The neuropathy and breathing sensation persist today.  I did see a neurologist about my arm/hand, and they believe it is nerve damage linked to the IV and have prescribed physical therapy.  Rib pain and back pain have come and gone.  The back pain is located in the spot where if you stuck a stick through the biopsy location through my back, it would be in a line.  

Somewhere around the later part of week one, to one and a half weeks post biopsy, I felt a small, slight bump on my back.  I didn't think too much of it.  First, I thought it may just be the start of a spot of acne.  Second, I had much more significant concerns.

This morning, though, that spot has grown significantly, overnight.  The lump is hard to the touch.  It is also quite painful to touch, but also just while moving at my desk.  

A week after the biopsy, the results were relayed simply as "benign."  Upon reading the pathology report, I learned that I have a PASH diagnosis.  When I relayed my post-biopsy concerns to the nurse providing the benign result, I was told none of my issues are from the biopsy and instructed I take Paracetamol.

I have resigned to the fact that I am suffering nerve damage from the IV.  But the other pains, and now this significant growth in my back are unexplained and strange.  

Has anyone ever experienced or seen these types of issues after a biopsy?