question: I have developed two indentations and a lump on the top of my head. The left one is getting longer - started off at approximately 1 in long and is now 2 and a half and is starting to go past my hairline. I don t experience headaches but have periodically experienced memory loss. I have had a ct scan which showed nothing and have recently had an mri scan which has showed nothing except a small cist in the sinuses. should I be worried. I have seen a neurologist, a neurosurgeon and a plastic surgeon. I am 53 could it be something to do with hormones and/or diet. I have also experienced considerable weight gain in the past 15 months which is when these indentations started