<s>[INST] Hi. I have a ball like lump under my skin on my right n left butt cheek....where the lump is located the skin is dark. There is No pain! When I touch it, it kinda of feels like a tiny pebble. They are both no where near my anus or crack. Any idea what it can be n how I can get rid of it???? [/INST] Hi, dairy have gone through your question. I can understand your concern. You may have some soft tissue tumor like lipoma or neurofibroma or dermatofibroma.  Or it may be some cyst or abscess.  You should go for examination and if needed go for biopsy of that lump. It will give you exact diagnosis. Then you should take treatment accordingly. Hope I have answered your question, if you have doubt then I will be happy to answer. Thanks for using Chat Doctor. Wish you a very good health. </s>