Shared decision-making in older patients with cancer - What does the patient want?

Shared decision-making in cancer care, where we move away from the paternalistic "the doctor knows best" attitude to involving the patient in decisions regarding her or his health, is now universally accepted in western societies. However, in many situations this is easier said than done. For instance, if the interaction with the patient is not performed in a skillful manner, shared decision-making can make the patient feel unsafe - shouldn't the specialist know how to treat a serious disease such as cancer? Why would the doctor ask the patient about this? In other cases, what the patient wants in unrealistic, for example a severely frail patient aged 85 years with more than one life-limiting comorbidity who is diagnosed with an advanced cancer and has a goal of living to be at least 100 years. And what does a patient with advanced dementia want in the context of a cancer disease? In this perspectives piece, we will describe different scenarios that may arise within geriatric oncology and shared decision-making, make recommendations about how to handle such situations, and provide some food for thought.