P has been having pain down his right arm lately, which seems to be from the ulnar nerve - the one that goes round the "funnybone". We don't know what's causing it, or whether it's related to the cancer. I was looking up pain from that nerve, and it seems it can get pinched underneath the collarbone....now P has a bony met on his sternum, causing quite a lump - could this maybe extend under his collarbone and press on the nerve to the arm? I'm speculating, obviously, and we don't see the oncologist again for a couple of weeks; I just wondered if anyone on here had experienced anything similar. Thus far the oncologist has left the lump alone as it wasn't causing any symptoms....P has just had 5 days RT to the base of his spine in an effort to reduce pain from the sciatic nerve being pinched.