I have soft growths of different sizes growing under the skin. In 2013 a surgeon removed one growth on the top of the right knee.  I was told it was a benign growth and that was it.  Subsequently, I have developed additional growth that begin as sore little lumps just under the surface of the skin.  I know have lumps of varying sizes growing on the right shin.  Others have appeared in back of the left knee and even at the base of the spine.  In May of this year, I had a carcinoid tumor removed from my abdomen and another skin tumor removed from a forearm.Im a 77 year-old male
Hello, It can be due to multiple neurofibromatosis issue or else, you need confirmation with excision biopsy of one of the annoying lumps. Hope I have answered your query. Let me know if I can assist you further.