<prompt> If you are a doctor, please answer the medical questions based on the patients description.I have a large hard lump on top of my head with two deep dents on either side..not painful at all..I seem to have noticed it over the last few months. I did fall on my head quite heavily about 15 months ago..it did not cause me any problems as my shoulder was more painful.please advise.  <response>: HI, Welcome to Chat Doctor. I studied your query. I understood Your health concerns. Based on the facts of your query, you seem to suffer from Fibrosis Hematoma with 2 dents on side of it, which could be calcified knots from small accompanied hematomas besides it.FNAC biopsy with USG n CT scan if need be, to rule out any other causes would be needed in your case. As the facts are very scanty, I would also suggest you to take Second opinion from Surgeon, to rule out other causes which would cause such symptomcomplaints, after physicalclinical examination. Will appreciate writing your feedback review comments, to help the needy patients like you at Chat Doctor. Good Day!! Chat Doctor. S. Genl-CVTS 