 - Arm I experimental: Patients receive dexamethasone. Patients receive optimal supportive care OSC including a prescription of a proton pump inhibitor while on dexamethasone, parallel nursing support, access to additional specialists e.g., pain-relief service, palliative care team, medical social worker, or physiotherapist, and open access to follow-up in a specialist clinic. OSC may also include analgesics, bronchodilators, and other supportive treatment as needed. 