My mother is 86 years old and in around stage 5 dementia, still recognizes people but losing walking ability and thought processes quickly. She was diagnosed with brain atrophy on MRI this past summer, no mention of anything else seen. I was just told by a dermatologist this week that he highly expects a skin biopsy about the size of a dime from her scalp to come back as melanoma. We had pointed it out to various docs who just ignored it. Though understanding the severe treatment of melanoma, and her advanced dementia, she has no desire for melanoma or cancer treatment per se. Just wondering if treatment towards recovery is not chosen, what are the next steps or tests required, if any, and what is a life expectancy for this if not treated? I can only find such information regarding full treatment, excision, grafting and chemo, but not what we're looking at if left alone. Derm said not to tell her as skin cancer was always a huge anxiety for her and he's known her for years. Week prior she was saying she just wanted to die without even knowing this complication, and has already refused invasive treatment for hydrocephalus shunts and doesn't even want to be put on insulin injections. She's just done with life she says. Still waiting to hear back from pathology on what happens next. Does anyone have any familiarity with how melanoma progresses without treatment? Having had a MIL go through the full spectrum and terror of dementia, perhaps this will be easier for her than later progression of dementia to not knowing us or where she is and being a complete panic case with her lifetime anxiety issues. Truly don't know what to think or what's next. Thank you for any insight.