<s>[INST] I've had a small lump in the upper part of my left calf muscle for several months.  Recently, bruising started around it, and it's a little bit painful when pushed.  It feels like the size of a pea, and is the consistency of a marble.  I'm a 35y/o active female. [/INST] HI. This looks to be a sebaceous cyst or a lipoma.The better way can be to do a FNAC= fine needle aspiration cytology. This will give an idea. The best way is to get the lump excised in toto. This will remove the disease and you get a tissue diagnosis. </s>