Hi.

Sarcoma is a rare form of cancer, whereas soft lumps under the skin are very common and mostly harmless. They can be cysts or fatty lumps, or plenty of other harmless things.  

I had two fairly large skin lumps removed from my right arm in a minor operation under local anaesthetic around the year 2000.  One was on my upper arm, and the other on my lower arm.  The surgeon did a great job; the wounds healed cleanly, there was no recurrence and the scars have now faded.  They had some long Latin name but they were benign. 

So, I suggest you show your lumps to your GP and let him or her put your mind at rest.

The thing is, they are hard, small lumps so i don’t think they are fatty lumps. I have to wobble around my bones to find these tiny lumps but i’m still scared for some reason. I have no persistent bone pain so I’m guessing they’re just random bumps? I don’t want to go to the GP for minor lumps that can hardly be felt but i’m still kind of worried:(

Well, they're unexplained and they're worrying you, so show them to the GP. 

Hello and thanks for posting, 

Things like unexplained lumps can be worrying, but I'm afraid no one on the forum can tell you for sure if there is or isn't anything serious the matter. Only doctors can diagnose, so my advice is to see your GP and get yourself properly checked out. I think it will be the only way to put your mind at rest so please do make an appointment. 

All the best, 

Julia