Ds is 8 years old. Has a lumpy area on top of head. First noticed when he was 3. Dr just thought it was just way the bone has fused together. Accepted this diagnosis but has always been at the back of mind. Saw a peaditrician today for something unrelated and as we were not going to see her again mentioned my Ds head. She felt it and decided she will send him for MRI scan. Now so cross with myself for not checking before. Could it be something sinister after all this time? Please help as I am sick with worry.