Cancer-related information needs and treatment decision-making experiences of people with dementia in England: a multiple perspective qualitative study.

Although patients with cancer-dementia are involved in their treatment decision-making, informal caregivers are generally crucial in supporting this process. Individual patient needs and circumstances related to their cancer must be considered in the context of dementia prognosis highlighting complexities of decision-making in this population. Oncology teams should strive to involve healthcare staff with dementia expertise as early as possible in the cancer pathway.