To my surprise, my mamo came back showing I have a lump deep within my left breast
chest wall. It was very dense and they performed a core biopsy which turned out fine. They also "marked the spot", for future exams, with a small titanium ribbon. Since then, I have burning and soreness in that breast and down my upper arm. Sometimes, it even feels like I have a little tenderness and burning in my neck and inner left thigh. Any idea what might be causing this?