I Am 71 Years Old And Have Recently Lost About

I am 71 years old and have recently lost about 30 lbs. down from around 200 lbs to 171 lbs and noticed a protrusion near my sternum that was about the size of a quarter and sticking out 1/2 + inches. Went to my internist and was told it was my 'xiphoid process' ? Then had a series of x-rays. What are the possible ramifications? Could it be malignant? Is there reason to be overly concerned? Or is it 'normal' under my specific situation? Thanks you for any information/explanation.