<s>[INST] Hi, may I answer your health queries right now ? Please type your query here...my daughter just turned 9 and tonite she complained that one of her breast felt like it had a soda bottle cap in it and i felt it and it feels like a little lump should i be worried [/INST] Hi, dairy have gone through your question. I can understand your concern. She may have some benign breast lesion like fibroadenoma or some cyst.  Don't worry much about that.  Cancer is very rare at this age.  She should go for ultrasound study and excision biopsy.  Consult your doctor and plan 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>