My 62 year old mother has small cell lung cancer with mets to the brain.  She has undergone radiation and chemotherapy, also whole brain radiation and gamma knife to one of the areas of the brain.  She is on daily dose of 2 mg decadron as she continues to have headaches.  This morning she woke up with a large lump on her right temple, and a smaller one on her left temple. This are hard to the touch and are not painful.
Painless hard lumps can be due to metastasis to skull bones from Small Cell Lung Cancer. A plain radiograph (X-ray) of skull will be diagnostic. Please discuss it with your treating oncologist.