My 10 yr. old daughter has a T5 compression fracture caused by a lesion of unknown origin. Two biopsies were performed. The first was unsuccessful so the Dr. offered to tx her as if it were Langerhans cell histiocytosis which was the only diagnosis that matched her x-ray according to him; low dose chemo/steroids. We opted for a second biopsy which revealed a inactive infection of unknown origin. She is currently on 500 mg bid of Amox-Clav for 6 weeks and is in a brace. After 2 weeks, of antibiotics and about a month in the brace, she is still waking up in the middle of the night with pain that starts out as a tingling radiating pain that wraps around from her back to her chest and then becomes a stabbing pain. She states her level of pain is about an 8. She has a difficulty time breathing at times, and her sternum seems to be protruding even more. We have been dealing with this since late October 2013. I am confused as to why she is receiving antibiotics for an inactive infection and am wondering what this infection could ve been caused by.