<s>[INST] My son had a depressed skull fracture 2 years ago, there were always 2 little bumps by his ears that were looked at earlier, now he is complaining it hurts behind his ear. these 2 bumps are now biggger and bulging out. Any ideas what this may be....... Part of his skull, or a calcum deposit? [/INST] Hi, dairy have gone through your question. I can understand your concern. You have bumps behind the ear. It can be due to sebaceous cyst or some other benign lesion or infectious cyst. You should go for examination and if required go for excision biopsy. It will give you exact idea. Hope I have answered your question. If you have any doubts then feel free to ask me. I will be happy to answer. Thanks for using Chat Doctor. Wish you a very good health. </s>