@noeliax, welcome. Palliative care can help provide comfort for symptoms of advanced lung cance with liver metastasis. I found this article from the Lung Association to be really helpful in describing palliative care.

- Supportive (Palliative) Care for Lung Cancer https://www.lung.org/lung-health-diseases/lung-disease-lookup/lung-cancer/treatment/types-of-treatment/supportive-palliative-care

Symptoms that may be improved by palliative care include:
Pain.
Nausea or vomiting.
Anxiety or nervousness.
Depression or sadness.
Constipation.
Difficulty breathing.
Loss of appetite.
Fatigue.
Trouble sleeping.

Can you share a bit more? Do you have lung cancer or are you caring for someone living with lung cancer? What symptoms are you managing?