<s>[INST] Hi,my guestion is this,12 years ago I had rotator cuff surgery,when the Dr.was doing the surgery he found a calcium ball in my arm he said it was the size of a mans thum knuckle,I been having pain around the same spot where the calcium ball had been,the doctor sent me for a MRI it show everything was fine,I also so had a MRI 12 years ago before my surgery,it DID NOT SHOW THE CALCIUM,my guestion is this can this be my problem again and if so why doese nt the calcium show up in a x-ray,or MRI? Thank You [/INST] Yes, it may be part of side effects of chemotherapy, but some investigations should be done first. It may be acute gouty arthritis so serum uric acid should be done first.You must not be worry early about this. I hope you are well. </s>